VPoulsen

TL3 Regular · Coimbra, PT

Long-standing member. Posts carefully and infrequently, mostly in the practice and analytics categories.

Joined 11 October 2024 · last posted 2d

141 posts, newest first. Showing up to 150.

Why catalogue breadth is not evidence of anything Replied, post #3 · Compounds › Other compounds · 26 Jul 2026 · 28 likes This subcategory exists because some people will research compounds outside the main groups discussed here. The standard of evidence and honesty about its limits…
Pinch or no pinch, and how needle length changes the answer — what changed since Replied, post #59 · Practice › Administration · 19 Jul 2026 · 30 likes What I can speak to on Pinch is narrow, so I will keep it narrow rather than generalising from it. Beyond that boundary I do not know.
Reading order for a first week here, and what to skip until later — what changed since Replied, post #39 · Start Here › Welcome · 13 Jul 2026 · 11 likes The Lounge is a real category rather than a dumping ground. The sourcing rule still applies there, which surprises people, but the register is looser and nobody minds a…
Revisiting: What pooling buys you and what it destroys Replied, post #86 · Evidence › Meta-analyses · 10 Jul 2026 · 8 likes Reporting rather than recommending, on pooling buys. What happened is above. Whether it should have is a different question and not one I am qualified to answer.
Revisiting: Journal club: SURMOUNT-OSA and a hard endpoint in a soft field Replied, post #91 · Evidence › Journal club · 8 Jul 2026 · 16 likes Reading order that works for these sessions: registry entry, methods, baseline table, primary result, then abstract last. Reading the abstract first anchors everything…
[2026 update] Journal club: what we got wrong in an earlier session Replied, post #5 · Evidence › Journal club · 6 Jul 2026 · 25 likes Bringing the previous paper on the same question makes the session much better and doubles the preparation. Worth doing every third session rather than every one.…
[2026 update] Interpreting a result that disagrees with the supplier's certificate Replied, post #50 · Sourcing › Independent verification · 29 Jun 2026 · 18 likes Worth separating two things that post #48 runs together. Interpreting a result looks different depending on whether you are reading the primary literature or the…
Immortal time bias in a claims-database study — one year on Started this topic · Evidence › Study critique · 28 Jun 2026 · 26 likes Posting this under the heading it deserves: Immortal time bias in a claims-database study — one year on Everything below is what sits behind that. I would like to…
Named, unnamed and unspecified impurities as regulatory categories — the long version Replied, post #30 · Analytics › Impurities & related substances · 28 Jun 2026 · 23 likes Truncation products are substantially lower in mass and usually well separated chromatographically, which makes them the easiest class to see and the least likely to be…
Stepping down deliberately, and how to do it without losing progress — what changed since Replied, post #20 · Practice › Dosing & titration · 27 Jun 2026 · 0 likes Narrowing post #17, because the general version has more than one answer. Concentration and dose get conflated constantly in this subcategory. Changing how much diluent…
Why fasting instructions for oral semaglutide are not optional advice Replied, post #59 · Compounds › Oral incretins · 25 Jun 2026 · 3 likes Anyone comparing published oral and injectable efficacy should check whether the comparison is within one trial or across two. Across two, the populations differ and…
Why side effects reset at each escalation and that is not a failure Replied, post #2 · Practice › Side effects · 24 Jun 2026 · 3 likes Discontinuation for adverse effects in the published trials was not rare at the higher doses. That number belongs in any discussion of tolerability and is usually left…
Second pass at: Programming during a large energy deficit Replied, post #34 · Nutrition & Training › Resistance training · 19 Jun 2026 · 33 likes This follows post #31 rather than contradicting it. A resistance stimulus during a deficit is the other half of the lean-tissue argument, and the evidence for it is…
Spreadsheets: an appreciation — what changed since Replied, post #71 · Lounge › Off topic · 15 Jun 2026 · 12 likes What I would want before treating Spreadsheets as settled: the method, the sample, and whether anyone tried to find the opposite result. Two of the three are usually…
Racemisation and why it is invisible to a mass measurement Replied, post #72 · Analytics › Impurities & related substances · 12 Jun 2026 · 0 likes Reading back through the racemisation threads from last year, the same three questions come up every time and only one of them has ever been answered properly. That…
An appeal that succeeded, with the letter structure — the long version Replied, post #71 · Access › Insurance & coverage · 9 Jun 2026 · 0 likes This follows post #70 rather than contradicting it. The most useful reply I ever got about appeal was a request to state my units. It sounds like pedantry and it has…
Risk-of-bias tools and the judgement they conceal — does this still hold? Replied, post #12 · Evidence › Meta-analyses · 4 Jun 2026 · 6 likes Post #9 is the version of this I will quote in future. One addition. Since Risk-of-bias tools keeps coming up, it should probably be a maintained page rather than a…
GLP-1 receptor distribution: central and peripheral Replied, post #62 · Pharmacology › Receptor biology · 3 Jun 2026 · 4 likes Post #61 and I disagree about the size of the effect, not about the direction. Receptor desensitisation and internalisation are real phenomena in vitro and their…
Official shortage notices and what they authorise Replied, post #83 · Access › Shortages · 2 Jun 2026 · 1 like A note on how official shortage notices gets discussed rather than on official shortage notices itself: the confident posts get the replies and the careful ones get…
Coming back to: Why a preprint's supplementary material is often the best part Replied, post #68 · Evidence › Preprints · 2 Jun 2026 · 0 likes Answering the question post #64 raises rather than the one it answers. Where a preprint's numbers are the basis of a claim being repeated here, someone should check…
A reconstituted vial's beyond-use date and the reasoning behind common figures Replied, post #14 · Practice › Storage & stability · 1 Jun 2026 · 0 likes Vial integrity: once a vial is entered with a needle repeatedly, the rubber closure degrades and the integrity fails. Using the same vial repeatedly over weeks or…
Follow-up: Comparing two chromatograms from different laboratories, properly Replied, post #35 · Analytics › HPLC & UHPLC · 31 May 2026 · 27 likes On integration: where the baseline is drawn matters more than most people realise. On a clean chromatogram with well-resolved peaks the choice is inconsequential. On a…
Coming back to: Lateral-flow and colorimetric approaches: the specificity problem Replied, post #30 · Analytics › Home & field testing · 25 May 2026 · 0 likes Distinguishing three things in the Lateral-flow and colorimetric approaches discussion that keep getting used interchangeably: the observation, the proposed mechanism,…
Official shortage notices and what they authorise Replied, post #68 · Access › Shortages · 25 May 2026 · 23 likes Switching presentation or strength during a shortage is a prescribing decision rather than a substitution anybody should improvise. I would rather be precise about what…
Follow-up: External review after an internal denial Replied, post #2 · marked as the solution · Access › Insurance & coverage · 20 May 2026 · 20 likes External review is one of those subjects where the general answer and the answer for a specific case diverge, and the thread will go in circles until someone says which…
Endotoxin and why it is a separate question from purity — what changed since Replied, post #21 · Analytics › Impurities & related substances · 18 May 2026 · 18 likes Post #20 is the version of this I will quote in future. One addition. That last point is the ceiling on what any purity figure can claim. A method that cannot see a…
Prescription portability between countries Replied, post #33 · Access › International · 15 May 2026 · 3 likes Post #30 answers the question as asked. The question underneath it is different. Reciprocal recognition between regulators exists in some regions and not others, and…
Electrolyte supplements: which ones do anything Replied, post #5 · Nutrition & Training › Hydration & electrolytes · 7 May 2026 · 21 likes Building on post #3 rather than restating it. What I would tell a new member reading about electrolyte supplements for the first time: the confident posts are not the…
[2026 update] 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #86 · Devices › Syringes & needles · 4 May 2026 · 6 likes Dead volume: residual liquid in the hub and needle after withdrawal. Typical residual is 0.01 to 0.02 mL for an insulin syringe with a fixed needle. Accounting for it…
[2026 update] 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #65 · Devices › Syringes & needles · 27 Apr 2026 · 17 likes Confirming post #64 from a second method, which matters more than confirming it from a second person. Sharps containers are a legal requirement for disposal in several…
Micro-titration: a disputed topic, argued properly — one year on Replied, post #27 · Practice › Dosing & titration · 21 Apr 2026 · 18 likes The version of Micro-titration that circulates here is a simplification of a simplification. It is not wrong, but it has lost the conditions under which it holds, and…
GLP-1 receptor distribution: central and peripheral Replied, post #35 · Pharmacology › Receptor biology · 20 Apr 2026 · 0 likes Answering the question post #31 raises rather than the one it answers. Cross-reactivity and selectivity: the compounds are not perfectly selective for their target…
Common supplements people ask about, assessed one at a time — a second dataset Replied, post #90 · Practice › Interactions · 20 Apr 2026 · 10 likes Post #86 describes the usual case. This is about the unusual one. Anticoagulant questions come up regularly and are the clearest case for professional advice rather…
Journal club: indirect comparison between two programmes, defended and attacked Replied, post #35 · Evidence › Journal club · 19 Apr 2026 · 19 likes The arithmetic in post #33 is right; the assumption feeding it is the part to check. The most common failure mode is spending fifty minutes on the effect size and ten…
Coming back to: Training through a dose escalation week Replied, post #75 · Nutrition & Training › Resistance training · 9 Apr 2026 · 2 likes Protein and training are complements rather than alternatives, and the published work on lean-tissue preservation treats them that way. That is the honest state of it…
Preprint servers and what screening they do — the long version Replied, post #11 · Evidence › Preprints · 5 Apr 2026 · 0 likes Sample size and pre-registration are checkable in a preprint exactly as in a paper, and they carry the same weight.
Micro-titration: a disputed topic, argued properly Replied, post #54 · Practice › Dosing & titration · 1 Apr 2026 · 8 likes The documentation on micro-titration is better than this thread and I say that as someone who has posted in the thread.
Follow-up: Lyophilisation and why the cake looks the way it does Replied, post #10 · Pharmacology › Formulation chemistry · 24 Mar 2026 · 0 likes The arithmetic in post #8 is right; the assumption feeding it is the part to check. Bulking agents such as mannitol give the cake structure and contribute to the mass…
Follow-up: Search filters: what is missing Replied, post #55 · Meta › Site feedback · 17 Mar 2026 · 12 likes Search filters is well covered in the tag pages, and the older discussions are better than the recent ones because they were argued out properly. Worth twenty minutes…
Oral versus injected administration claims for BPC-157 Replied, post #24 · Compounds › Repair & healing peptides · 16 Mar 2026 · 15 likes BPC-157: the preclinical literature is extensive, mostly from a small number of research groups, and reports effects across a wide range of injury models. The breadth…
Adducts: sodium, potassium, and the peak you did not expect — does this still hold? Replied, post #62 · Analytics › Mass spectrometry · 9 Mar 2026 · 29 likes Response in electrospray is not proportional to abundance across different species. Using peak intensities from a mass spectrum to estimate proportions is a mistake…
Nausea profile of amylin analogues compared with GLP-1 agonists Replied, post #48 · Compounds › Cagrilintide & amylin analogues · 7 Mar 2026 · 0 likes Small methodological point on nausea profile of amylin analogues: repeating a measurement is cheap and resolves most of what is being argued about here at no cost to…
A parcel stationary at a customs facility for nine days — does this still hold? Replied, post #7 · Sourcing › Logistics · 27 Feb 2026 · 6 likes Worth separating two things that post #3 runs together. What I would tell a new member reading about parcel stationary for the first time: the confident posts are not…
MS/MS sequence confirmation: what it costs and when it is worth it — what changed since Replied, post #4 · Analytics › Mass spectrometry · 21 Feb 2026 · 2 likes Noted, and I have changed what I was going to do on the strength of it.
[2026 update] Journal club: PIONEER 6 as a safety trial Replied, post #3 · Evidence › Journal club · 20 Feb 2026 · 23 likes Coming back to the opening post, because the follow-up matters more than the original answer. Reading this PIONEER 6 thread as someone who came in with a fixed view:…
Second pass at: Circumference measurements as a poor man's composition estimate Replied, post #56 · Outcomes › Body composition · 19 Feb 2026 · 7 likes Resting metabolic rate: body composition affects metabolic rate. As fat mass decreases and lean mass is maintained, metabolic rate is usually maintained better than…
An ABAB design with a data table and honest limitations — a second dataset Started this topic · Research Methods › N-of-1 designs · 18 Feb 2026 · 0 likes On the subject in the title: An ABAB design with a data table and honest limitations — a second dataset Working notes rather than a conclusion. Posting a small dataset…
[2026 update] Does a peptide degrade silently, with no visual change? Replied, post #24 · Practice › Storage & stability · 15 Feb 2026 · 5 likes On post #20 — agreed on the reasoning, with one qualification. If you are new and reading this thread for the answer to peptide: the answer is conditional, the…
Coverage in the US: a map of the usual obstacles Replied, post #49 · Regional › North America · 10 Feb 2026 · 0 likes Provincial formularies in Canada are published and are the correct source for coverage information. Coverage for weight management is less common than for diabetes. I…
Guidelines revision: what changed and why — one year on Replied, post #68 · Meta › Announcements · 8 Feb 2026 · 24 likes Two questions I would want answered before drawing anything from the Guidelines revision data above: how were the cases selected, and what happened to the ones that…
Trifluoroacetate content and its consequences Replied, post #44 · Analytics › Impurities & related substances · 29 Jan 2026 · 0 likes Narrowing post #41, because the general version has more than one answer. Off-target structures: if the sequence synthesis goes wrong, a completely different amino acid…
Revisiting: Absolute versus relative contraindications Replied, post #13 · Safety › Contraindications · 27 Jan 2026 · 3 likes History of pancreatitis: these compounds can rarely trigger pancreatitis. History of pancreatitis increases relative risk. That is a relative contraindication, not…
Coming back to: The SOUL trial and oral semaglutide cardiovascular outcomes Replied, post #87 · Compounds › Oral incretins · 16 Jan 2026 · 0 likes PIONEER 6 is the cardiovascular outcome trial for oral semaglutide and it enrolled a diabetes population at high cardiovascular risk. Quoting it outside that population…
Filter needles: when they help and what they cost you Replied, post #27 · Devices › Syringes & needles · 15 Jan 2026 · 0 likes Sharps containers are a legal requirement for disposal in several jurisdictions and a sensible precaution everywhere. A rigid sealed container is the minimum. Adding a…
A partial dose because the pen emptied mid-injection Replied, post #97 · Practice › Administration · 10 Jan 2026 · 2 likes I changed my mind about partial dose because the pen after someone here asked me for the source and I could not produce one. That is worth saying out loud because it is…
Follow-up: Search filters: what is missing Replied, post #11 · Meta › Site feedback · 8 Jan 2026 · 5 likes Source for the Search filters figure, since it was asked for. It is in the discussion rather than the abstract, which is why the version circulating is stronger than…
Vomiting: when it is expected and when it is a reason to stop Replied, post #4 · Practice › Side effects · 26 Dec 2025 · 0 likes The published rates come from populations that were titrated on a defined schedule with clinical supervision. Rates from a forum are not comparable and are biased by…
The decimal-point error, and the habit that catches it Replied, post #31 · Practice › Reconstitution · 14 Dec 2025 · 7 likes Careful with the language on decimal-point error. "Not detected" and "not present" are different findings and the first is a statement about the method.
Coming back to: Why most self-reports here are not experiments, and that is fine Replied, post #25 · Research Methods › N-of-1 designs · 6 Dec 2025 · 0 likes I had written a reply contradicting post #23 and deleted it. Here is what survived. Order effects matter. If you always try A before B, you cannot separate the…
Hepatic steatosis: what the MASH trial evidence supports — one year on Started this topic · Clinical › Comorbidities · 28 Nov 2025 · 14 likes On the subject in the title: Hepatic steatosis: what the MASH trial evidence supports — one year on Working notes rather than a conclusion. Reading back through what…
Sleep quality changes during weight loss — what changed since Replied, post #70 · Wellbeing › Sleep · 19 Nov 2025 · 13 likes Stimulants and sleep: if supplementing with caffeine or other stimulants for energy during weight loss, timing and dose matter for sleep. Evening stimulant use…
Pen mechanics when the cartridge is nearly empty — does this still hold? Replied, post #18 · Devices › Pens & autoinjectors · 18 Nov 2025 · 3 likes Picking up post #15: that is the part I would want checked first. Disposal of a used pen is a sharps question even where the needle is retracted, and local rules vary…
EMA product information as a primary source Replied, post #62 · Regional › European Union · 13 Nov 2025 · 3 likes Coming back to post #60, because the follow-up matters more than the original answer. EMA is the regulator with national implementation. Licensed incretin analogues are…
Pooling trials with different estimands — what changed since Replied, post #50 · Evidence › Meta-analyses · 12 Nov 2025 · 4 likes Double extraction with disagreement resolution is standard and is worth checking for, because single extraction errors are common and non-random. The short answer was…
Titles that describe the question, not the situation Replied, post #147 · Start Here › How to Ask · 12 Nov 2025 · 13 likes "Has anyone had this happen" gets you anecdotes. "What would cause this, and what would distinguish the causes" gets you an explanation. The second question is almost…
[2026 update] A report I filed that turned out to be wrong, and the correction Replied, post #2 · Sourcing › Vendor reports · 5 Nov 2025 · 0 likes Dosing and purity: a vial that is 99% pure might contain 80% of its label claim if the other mass is water, counter-ion, and excipient. Purity and content are…
Warfarin and altered intake: the monitoring argument — the long version Replied, post #37 · Practice › Interactions · 23 Oct 2025 · 8 likes Anticoagulant questions come up regularly and are the clearest case for professional advice rather than discussion, because the consequence of being wrong is not…
[2026 update] Does dual agonism explain the effect size, or is it dose? Replied, post #52 · Compounds › Tirzepatide · 22 Oct 2025 · 22 likes The 2.5 mg starting dose is not a therapeutic dose in the sense that weight loss is minimal at that dose. It is a tolerance-testing dose. Confusing the purpose of a…
Sleep tracking data and its considerable limitations Replied, post #37 · Wellbeing › Sleep · 19 Oct 2025 · 11 likes Energy availability affects sleep in both directions, and a large deficit can produce either fragmentation or unusual sleepiness. Happy to be the one who is wrong here…
Sleep tracking data and its considerable limitations Replied, post #28 · Wellbeing › Sleep · 18 Oct 2025 · 10 likes Picking up post #27: that is the part I would want checked first. Gastrointestinal effects overnight: nausea or reflux or constipation at night can disrupt sleep.…
Temperature loggers worth the money — the long version Replied, post #58 · Devices › Cold chain · 17 Oct 2025 · 2 likes Temperature loggers worth the money came up in a thread eighteen months ago and was answered well. I cannot find it, which is itself the problem, so here is the…
Where to report an adverse event officially, by region — a second dataset Replied, post #4 · Safety › Adverse events · 7 Oct 2025 · 0 likes Psychological adverse events: mood changes, anxiety, or suicidal ideation warrant discussion with a mental health professional. These are rare but real.
Second pass at: What "verified" means on our vendor pages, stated narrowly Replied, post #22 · Sourcing › Vendor reports · 7 Oct 2025 · 0 likes Narrowing post #19, because the general version has more than one answer. Photograph the vial and the label before opening. It costs ten seconds and it is what turns a…
Citing a preprint in a maintained document: our rule and its reasoning — does this still… Replied, post #63 · Evidence › Preprints · 30 Sep 2025 · 32 likes Second this, and I would have said it less carefully.
Dead volume across syringe and needle combinations Replied, post #6 · Devices › Syringes & needles · 30 Sep 2025 · 0 likes U-100 means the barrel is graduated for a solution containing one hundred units of insulin per millilitre. For anything that is not insulin, the units are simply…
Older adults, sarcopenia risk, and the trade-off nobody quantifies Started this topic · Clinical › Special populations · 15 Sep 2025 · 29 likes Older adults, sarcopenia risk, and the trade-off nobody quantifies — setting out what I have, and where I think it stops being reliable. Older adults: setting out the…
Payment method and the leverage it gives you, ranked Replied, post #6 · Sourcing › Payments · 13 Sep 2025 · 1 like No payment facilitation: this site does not handle payments and does not connect buyers and sellers for the purpose of payment. We discuss logistics and documentation…
Journal club: indirect comparison between two programmes, defended and attacked — one… Replied, post #36 · Evidence › Journal club · 11 Sep 2025 · 7 likes I have been on both sides of the indirect comparison argument in this category within eighteen months, which should tell you how strong the evidence for either side is.
Second pass at: Robustness: the parameters worth deliberately varying Replied, post #9 · Analytics › Method validation · 25 Aug 2025 · 0 likes The limit of quantitation determines what the impurity table can honestly contain. Peaks below it can be reported as detected and cannot be reported as a number. The…
A checklist for reading a certificate in under two minutes — does this still hold? Replied, post #36 · Analytics › COA interpretation · 23 Aug 2025 · 9 likes This follows post #34 rather than contradicting it. "Not less than 98 per cent" is a specification. "98.3 per cent" is a result. A certificate carrying only the first…
The "under review" status pill and when a moderator applies it — a second dataset Replied, post #32 · Evidence › Preprints · 21 Aug 2025 · 4 likes A preprint with the data and code attached is frequently more checkable than a published paper without them. Reviewed and reproducible are different properties. I would…
Second pass at: Import rules for personal quantities, by jurisdiction, dated Replied, post #3 · Sourcing › Regulatory · 20 Aug 2025 · 23 likes The opening post and I disagree about the size of the effect, not about the direction. Import rules for personal quantities differ from commercial import rules and both…
Request: a diff view for wiki revisions — the long version Replied, post #25 · Meta › Feature requests · 1 Aug 2025 · 0 likes I keep a log for diff view for wiki revisions specifically because my memory of it turned out to be systematically wrong in one direction. Six weeks of notes cost…
[2026 update] Cardiovascular risk: reading the outcome trials as a set Replied, post #69 · Clinical › Comorbidities · 11 Jul 2025 · 8 likes Mechanistic reasoning about a population that was excluded from the trials has an unimpressive track record. It is a good way to generate a question for a clinician.…
What the GIP component of tirzepatide is thought to contribute, and how confident we can… Replied, post #11 · Compounds › Tirzepatide · 4 Jul 2025 · 0 likes Post #7 and I disagree about the size of the effect, not about the direction. I keep a log for GIP component of tirzepatide specifically because my memory of it turned…
Reading a regulatory notice rather than an article about it — what changed since Replied, post #27 · Sourcing › Regulatory · 25 Jun 2025 · 27 likes Worth separating two things that post #23 runs together. Practical answer on Reading a regulatory notice, since the theoretical one is upthread: do the simplest check…
Obstructive sleep apnoea and a hard endpoint in this class Replied, post #123 · Clinical › Comorbidities · 24 Jun 2025 · 0 likes Chronic kidney disease: compounds in this class have renal benefit in people with kidney disease. The benefit appears to be additive to other renal-protective agents,…
A 5 mg vial and a 0.25 mg dose: the arithmetic in full — the long version Replied, post #143 · Practice › Reconstitution · 23 Jun 2025 · 0 likes Filter needles are worth considering if you are drawing from a glass ampoule and are pointless overhead for a stoppered vial. The trade is dead volume against…
Revisiting: Why a compound being unapproved is not the same as being illegal to possess Replied, post #27 · Sourcing › Regulatory · 17 Jun 2025 · 7 likes Adding thanks rather than a view. I do not have a view worth the space.
Obstructive sleep apnoea and a hard endpoint in this class Replied, post #116 · Clinical › Comorbidities · 16 Jun 2025 · 0 likes Everything in post #112 holds. The case it does not cover is the one I have. Obstructive sleep apnoea is a good example of a question where the honest answer is boring…
EU-wide position versus national implementation Replied, post #10 · Regional › European Union · 11 Jun 2025 · 2 likes This follows post #9 rather than contradicting it. An honest declaration on eu-wide position versus national implementation: I have a prior here and it is strong enough…
Coming back to: When "no data" is the complete and final answer Replied, post #5 · Compounds › Other compounds · 4 Jun 2025 · 7 likes Thymosin alpha-1 has a regulatory history in several jurisdictions and a real clinical literature, which puts it in a different evidential category from most of its…
Interpreting a composition change that is within the error bars Started this topic · Outcomes › Body composition · 3 Jun 2025 · 0 likes On the subject in the title: Interpreting a composition change that is within the error bars Working notes rather than a conclusion. Asking about interpreting a…
Half-life, steady state, and accumulation worked through Replied, post #17 · Pharmacology › Pharmacokinetics · 24 May 2025 · 33 likes Washout after stopping takes roughly the same four to five half-lives as reaching steady state. A month after the last dose is not the same as none. Filing this under…
Reading a trial's population section before its results — does this still hold? Replied, post #78 · Evidence › Trials · 7 May 2025 · 4 likes An open-label trial is not worthless and its subjective endpoints deserve more scepticism than its objective ones. That is a graded judgement rather than a verdict.
Second pass at: Pharmacy supply in the UK and the questions you will be asked Replied, post #33 · Regional › UK & Ireland · 28 Apr 2025 · 0 likes Post #32 answers the question as asked. The question underneath it is different. Occupational health screening: some UK occupations require medical checks. Disclosure…
Journal club: SURMOUNT-4 and continuation versus withdrawal — a second dataset Replied, post #20 · Evidence › Journal club · 22 Apr 2025 · 0 likes The most common failure mode is spending fifty minutes on the effect size and ten on the population. Reversing that ratio would improve most sessions.
Review cadence: how often is a page actually re-checked? Replied, post #20 · Documentation › Doc review · 15 Apr 2025 · 20 likes Post #19 is right about the mechanism and I think understates the practical bit. I would call the community position on review cadence likely rather than established,…
Telehealth prescribing models in the US Replied, post #82 · Regional › North America · 9 Apr 2025 · 5 likes Post #79 answers the question as asked. The question underneath it is different. Telehealth prescribing models: I would want to see the raw numbers rather than the…
What SELECT changed about how semaglutide is discussed, and what it did not Replied, post #68 · Compounds › Semaglutide · 7 Apr 2025 · 1 like Post #66 and I disagree about the size of the effect, not about the direction. An honest declaration on SELECT: I have a prior here and it is strong enough that you…
UK access routes, dated and sourced — a second dataset Replied, post #56 · Regional › UK & Ireland · 28 Mar 2025 · 2 likes Waiting times are the most variable and least generalisable thing reported here, and they are worth posting anyway with a region and a date. I am describing what is,…
Documenting a supplier's response to a discrepancy — does this still hold? Replied, post #14 · Sourcing › Vendor reports · 22 Mar 2025 · 14 likes Temporal patterns: if results from a supplier were good two years ago but have deteriorated recently, that is information. If they have been consistent over years, that…
Criticising the method without criticising the authors Replied, post #47 · Evidence › Study critique · 14 Mar 2025 · 15 likes A methods point on criticising the method without criticising rather than a substantive one: if the comparison is not like for like, the difference you are measuring is…
Second pass at: Gauge and length selection for subcutaneous injection Replied, post #36 · Devices › Syringes & needles · 1 Mar 2025 · 0 likes Needle gauge: smaller numbers (30G) are finer and less painful. Larger numbers (25G) are courser. For subcutaneous injection, 27-30G is typical. Finer needles take…
Adjudicated events and why the definition matters — the long version Replied, post #22 · Evidence › Trials · 24 Feb 2025 · 10 likes Acknowledging rather than arguing. The reasoning holds as far as I can follow it.
Prior authorisation: what the criteria usually require Replied, post #9 · Access › Insurance & coverage · 23 Feb 2025 · 2 likes Adding the measurement that post #6 says would settle it. Date every account in this subcategory. Payer criteria change frequently and the archive keeps posts…
A supplier that answers analytical questions with restated claims Replied, post #25 · Sourcing › Red flags · 16 Feb 2025 · 0 likes Unresponsiveness: a supplier that does not reply to reasonable requests for documentation or clarification is showing you something about how they operate.
A vial that will not fully dissolve: what to check and in what order Replied, post #11 · Practice › Reconstitution · 8 Feb 2025 · 2 likes Narrowing post #8, because the general version has more than one answer. Swirling versus inverting versus leaving it alone: the vial can be gently warmed (hands around…
Coming back to: Renal impairment: what the labelling says about dose Replied, post #35 · Clinical › Special populations · 7 Feb 2025 · 0 likes My position on Renal impairment is current rather than settled. I have revised it once already and I expect to again, so treat it accordingly.
Distinguishing a deletion sequence by mass alone Replied, post #32 · Analytics › Mass spectrometry · 30 Jan 2025 · 18 likes Post #30 put the caveat in the right place and I want to underline it. Speaking only to distinguishing a deletion sequence as I have actually seen it, rather than as it…
Canadian access and provincial variation Replied, post #30 · Regional › North America · 28 Jan 2025 · 1 like I read post #28 twice before replying, because I had assumed the opposite. I would be cautious about generalising from the canadian access and provincial variation…
Canadian access and provincial variation Replied, post #13 · Regional › North America · 23 Jan 2025 · 4 likes The version of canadian access and provincial variation that I was taught turned out to be a teaching simplification. Useful, and not true in the way I had assumed it…
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #58 · Data & Tools › Calculators · 20 Jan 2025 · 30 likes Unit-conversion tools are only as good as the assumption they make about the syringe. Ask what barrel and what graduation interval it assumed before trusting the units…
Turnaround times and what they mean for a decision — one year on Replied, post #29 · Sourcing › Independent verification · 12 Jan 2025 · 10 likes I keep a log for Turnaround times specifically because my memory of it turned out to be systematically wrong in one direction. Six weeks of notes cost nothing and…
Isotonicity and what happens when you get it wrong Replied, post #9 · Pharmacology › Formulation chemistry · 26 Dec 2024 · 9 likes Adding the measurement that post #6 says would settle it. Sterility and stability are separate properties requiring separate controls. A preservative addresses one of…
Oral semaglutide bioavailability and its variability between people — a second dataset Replied, post #13 · Compounds › Oral incretins · 25 Dec 2024 · 0 likes The useful distinction on Oral semaglutide bioavailability is between what was measured and what was inferred from it. Both end up in the same sentence and only one of…
Coming back to: When to suspect the method rather than the sample Replied, post #104 · Analytics › Method validation · 20 Dec 2024 · 16 likes Everything in post #101 holds. The case it does not cover is the one I have. Range: the concentration range over which the method has been validated. Going outside the…
Body image changing more slowly than the body Replied, post #70 · Wellbeing › Mental health · 19 Dec 2024 · 0 likes The arithmetic in post #67 is right; the assumption feeding it is the part to check. Body image and weight loss: large weight loss changes a person's relationship with…
Semaglutide half-life: where the 165 to 184 hour figure comes from — what changed since Replied, post #64 · Compounds › Semaglutide · 16 Dec 2024 · 0 likes Reading back through, this was answered upthread and I missed it. My fault.
Taste changes and food aversion, reported and discussed Replied, post #47 · Practice › Side effects · 1 Dec 2024 · 24 likes The relationship between symptom burden and outcome is not what people assume. Feeling worse is not evidence of a larger effect and feeling nothing is not evidence of…
Injection-site reactions: describing them precisely enough to be useful Replied, post #34 · Practice › Side effects · 29 Nov 2024 · 2 likes Answering the question post #30 raises rather than the one it answers. Effects that improve with time and effects that improve with dose reduction are different…
Type 1 diabetes: off-label use and the evidence gap — what changed since Replied, post #12 · Clinical › Special populations · 20 Nov 2024 · 18 likes Coming back to post #10, because the follow-up matters more than the original answer. Pregnancy and planning: these compounds are not approved for use in pregnancy.…
EMA product information as a primary source — does this still hold? Replied, post #70 · Regional › European Union · 16 Nov 2024 · 10 likes Confirming post #67 from a second method, which matters more than confirming it from a second person. What I would want before treating EMA product information as…
Revisiting: Melanocortin agonists: mechanism and the documented adverse profile Replied, post #120 · Compounds › Other compounds · 16 Nov 2024 · 4 likes Worth separating two things that post #118 runs together. Thymosin alpha-1 has a regulatory history in several jurisdictions and a real clinical literature, which puts…
Reading a preclinical wound-healing model and its relevance to a human tendon Replied, post #64 · Compounds › Repair & healing peptides · 15 Nov 2024 · 0 likes Practical answer on reading a preclinical wound-healing model, since the theoretical one is upthread: do the simplest check first, write down the result, and only then…
Revisiting: How to bring a laboratory report to an appointment usefully Replied, post #150 · Clinical › Bloodwork · 27 Oct 2024 · 19 likes On post #149 — agreed on the reasoning, with one qualification. Glycaemic markers integrate over different periods. A point glucose and a longer-term marker disagreeing…
Revisiting: Holding a dose indefinitely: is there a documented downside? Replied, post #3 · Practice › Dosing & titration · 24 Oct 2024 · 2 likes Useful. I have added it to my own notes with the date on it.
Hypertension improvement and when medication needs revisiting — a second dataset Replied, post #70 · Clinical › Comorbidities · 20 Oct 2024 · 2 likes Bariatric surgery history: altered anatomy after surgery affects absorption. That matters for oral medications and for reconstituted solutions. Discussing specific…
Progressive overload when the scale is falling — one year on Replied, post #135 · Nutrition & Training › Resistance training · 8 Oct 2024 · 28 likes I had written a reply contradicting post #131 and deleted it. Here is what survived. The reports here that state the programme, the load and the timeframe are useful.…
Food noise reducing and the disorientation that can follow Replied, post #13 · Wellbeing › Mental health · 27 Sep 2024 · 16 likes I had written a reply contradicting post #9 and deleted it. Here is what survived. Expectations set by other people's reported trajectories are a documented source of…
Progressive overload when the scale is falling — one year on Replied, post #98 · Nutrition & Training › Resistance training · 27 Sep 2024 · 4 likes I had written a reply contradicting post #96 and deleted it. Here is what survived. Nothing here is medical advice and anybody with a relevant condition should have a…
Reporting a discrepancy without making an allegation Replied, post #88 · Sourcing › Vendor reports · 23 Sep 2024 · 32 likes I have no financial interest in anything named in this thread and I want to say so before I comment on reporting a discrepancy, because it is the sort of subject where…
Food noise reducing and the disorientation that can follow Replied, post #5 · Wellbeing › Mental health · 9 Sep 2024 · 11 likes Social and relationship impacts: weight change affects how others perceive and interact with a person. Those impacts are real and can be psychologically significant.
Revisiting: How to bring a laboratory report to an appointment usefully Replied, post #10 · Clinical › Bloodwork · 5 Sep 2024 · 21 likes Building on post #7 rather than restating it. A trend needs at least three points to be a trend. Two points are a line and a line through noise is still a line. Adding…
Second pass at: Sodium, potassium and magnesium when intake drops Replied, post #76 · Nutrition & Training › Hydration & electrolytes · 4 Sep 2024 · 0 likes Post #74 put the caveat in the right place and I want to underline it. Potassium: similar to sodium; losing weight involves some potassium loss. Bananas, sweet…
Reporting a discrepancy without making an allegation Replied, post #44 · Sourcing › Vendor reports · 26 Aug 2024 · 0 likes Worth stating the null on reporting a discrepancy before we explain it: the observation may be nothing. That possibility deserves a sentence and usually does not get one.
Coming back to: Pricing far outside the range, in either direction Replied, post #26 · Sourcing › Red flags · 3 Aug 2024 · 0 likes Adding what did not work for me on Pricing far outside the range, since the failures never get written up and they are half the useful information.
Taste changes and food aversion, reported and discussed Replied, post #6 · Practice › Side effects · 30 Jul 2024 · 1 like Filing a mild objection to the consensus on taste changes and food aversion. Mild because I might be wrong; an objection because nobody has addressed the case that does…
Circumference measurements as a poor man's composition estimate Replied, post #4 · Outcomes › Body composition · 16 Jul 2024 · 0 likes Coming back to post #2, because the follow-up matters more than the original answer. DXA (dual-energy X-ray absorptiometry): the standard for body composition in…
Journal club: FLOW and the renal composite, component by component Replied, post #29 · Evidence › Journal club · 11 Jul 2024 · 8 likes Right, and stated more narrowly than I would have dared to state it.
Where the four-week escalation interval comes from, and what it is not Replied, post #39 · Practice › Dosing & titration · 5 Jul 2024 · 10 likes Four-week escalation interval would be much easier to settle if anyone reported the denominator. Almost nobody reports the denominator.