DSakamoto

TL3 Regular · Montpellier, FR

Wiki editor. Small, frequent, well-annotated edits.

Joined 29 November 2024 · last posted 3d · groups: wiki-editors

131 posts, newest first. Showing up to 150.

Request: a per-category review queue Replied, post #129 · Meta › Feature requests · 25 Jul 2026 · 7 likes Picking up post #126: that is the part I would want checked first. Feature request I expect to be refused, stated anyway: a private notes field on a topic, visible only…
Coming back to: Why a preprint's supplementary material is often the best part Replied, post #113 · Evidence › Preprints · 22 Jul 2026 · 9 likes Building on post #112 rather than restating it. Do not build anything on a preprint that you would mind rebuilding: if the preprint later changes substantially in…
Coming back to: Delayed gastric emptying and oral medication absorption: which drugs… Replied, post #48 · Practice › Interactions · 20 Jul 2026 · 0 likes Delayed gastric emptying is the mechanism behind most of the plausible interactions in this class: anything whose absorption depends on how quickly the stomach empties…
Deletion sequences: expected mass shifts by residue — the long version Replied, post #10 · Analytics › Impurities & related substances · 13 Jul 2026 · 1 like On Deletion sequences: the maintained page in the documentation commons covers the general case with citations and a review date, which is more reliable than any reply…
Follow-up: Sleep quality changes during weight loss Replied, post #68 · Wellbeing › Sleep · 12 Jul 2026 · 4 likes I read post #66 twice before replying, because I had assumed the opposite. Sleep quality changes reported here have several plausible contributors, and separating drug…
Reading order for a first week here, and what to skip until later — what changed since Replied, post #25 · Start Here › Welcome · 9 Jul 2026 · 10 likes Reading counts toward trust level, so lurking is not wasted. That is unusual and it is the reason the levels here track familiarity rather than volume. The number is…
Electrolyte supplements: which ones do anything Replied, post #49 · Nutrition & Training › Hydration & electrolytes · 7 Jul 2026 · 17 likes Picking up post #46: that is the part I would want checked first. Where a laboratory result exists, quoting it with the reference interval makes the discussion…
A calculator that gives a right answer to the wrong question Replied, post #32 · Data & Tools › Calculators · 5 Jul 2026 · 29 likes Post #31 answers the question as asked. The question underneath it is different. Titration planning: a calculator that shows you the escalation schedule for different…
Second pass at: The storage lookup and where its data comes from Replied, post #41 · Data & Tools › Calculators · 5 Jul 2026 · 17 likes Building on post #38 rather than restating it. A calculator that shows its working is worth ten that give an answer. The whole value is being able to see which step you…
I joined for one answer and stayed for a year — what changed my mind Replied, post #60 · Start Here › Welcome · 4 Jul 2026 · 3 likes Right — I had this wrong and I am glad to have read it before it mattered.
Semaglutide and gastric emptying — the mechanism behind most of the side-effect profile Replied, post #88 · Compounds › Semaglutide · 3 Jul 2026 · 0 likes Right, and stated more narrowly than I would have dared to state it.
Second pass at: Metformin co-administration and additive GI effects Replied, post #138 · Practice › Interactions · 2 Jul 2026 · 2 likes Answering the question post #134 raises rather than the one it answers. Anticoagulant questions come up regularly and are the clearest case for professional advice…
Revisiting: What pooling buys you and what it destroys Replied, post #73 · Evidence › Meta-analyses · 30 Jun 2026 · 7 likes Same experience here, different supplier, so it is at least not unique to one of them.
Trust level 3 requirements: a clarification — does this still hold? Replied, post #73 · Meta › Announcements · 29 Jun 2026 · 0 likes Where I part company with post #69, and it is a narrow parting. A definition problem is doing most of the work in this Trust level 3 requirements discussion. Once the…
Reference intervals: how they are constructed and why one in twenty flags — does this… Replied, post #8 · Clinical › Bloodwork · 22 Jun 2026 · 0 likes On post #5 — agreed on the reasoning, with one qualification. Offering a way to settle Reference intervals rather than another opinion about it. Two measurements, taken…
Follow-up: Reading an interaction checker output critically Replied, post #10 · Practice › Interactions · 18 Jun 2026 · 0 likes Alcohol is not contraindicated in the labelling and it does irritate a stomach that is already emptying slowly. There is no published interaction study, and the…
Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Replied, post #42 · Evidence › Journal club · 15 Jun 2026 · 29 likes I had written a reply contradicting post #40 and deleted it. Here is what survived. Sessions on negative or null results are consistently the most instructive and the…
I have no scientific background — can I still follow the analytics categories? Replied, post #19 · Start Here › Welcome · 14 Jun 2026 · 0 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…
An 18-month record including the parts that went badly Replied, post #40 · Outcomes › Progress reports · 13 Jun 2026 · 0 likes Plateaus and resets: if weight loss stalls and then resumes, that is ordinary. It is not evidence that the medication stopped working. It is not evidence that it is…
An appeal that succeeded, with the letter structure — the long version Replied, post #65 · Access › Insurance & coverage · 7 Jun 2026 · 6 likes The denial letter is the specification for your appeal. It states a criterion, and the job is to demonstrate that the criterion is met in the letter's own language.
Micronutrient adequacy at low total intake Replied, post #9 · Nutrition & Training › Protein & intake · 6 Jun 2026 · 11 likes On post #7 — agreed on the reasoning, with one qualification. Micronutrient adequacy is one of those subjects where the general answer and the answer for a specific…
[2026 update] Travelling with an injectable: documentation and practicalities Replied, post #2 · Access › International · 5 Jun 2026 · 0 likes Licensed prescribing: where a compound is approved, prescribing is restricted to licensed prescribers. Where it is not approved, the legality of possession and use is…
How to ask a question when you cannot say why you are asking it Replied, post #5 · Start Here › How to Ask · 3 Jun 2026 · 10 likes Building on post #2 rather than restating it. Timeline questions need the timeline. Dates, in order, with what happened on each. "A while ago" and "recently" are the…
Naming conventions for research peptides and the confusion they cause Replied, post #10 · Compounds › Other compounds · 2 Jun 2026 · 0 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…
Revisiting: Mean kinetic temperature explained without the mathematics Replied, post #39 · Practice › Storage & stability · 31 May 2026 · 0 likes The arithmetic in post #36 is right; the assumption feeding it is the part to check. Visible particulate is a strong signal in the other direction: it is a reason to…
Official shortage notices and what they authorise Replied, post #72 · Access › Shortages · 27 May 2026 · 4 likes Adding the boring version of official shortage notices, because the interesting version keeps getting posted and the boring one is usually right. Check the ordinary…
An appeal that succeeded, with the letter structure — the long version Replied, post #14 · Access › Insurance & coverage · 25 May 2026 · 0 likes Answering the question post #10 raises rather than the one it answers. Distinguishing three things in the appeal discussion that keep getting used interchangeably: the…
GLP-1 receptor distribution: central and peripheral Replied, post #56 · Pharmacology › Receptor biology · 25 May 2026 · 14 likes Post #53 is the version of this I will quote in future. One addition. Pharmacological class effects: all GLP-1 agonists slow gastric emptying and suppress appetite.…
Why the titration planner refuses to produce a schedule below a floor Replied, post #75 · Data & Tools › Calculators · 18 May 2026 · 23 likes Titration planner refuses sits at the boundary between what this community can usefully discuss and what it cannot, and I think it falls on the discussable side,…
Follow-up: Sleep quality changes during weight loss Replied, post #24 · Wellbeing › Sleep · 17 May 2026 · 2 likes Gastrointestinal effects overnight: nausea or reflux or constipation at night can disrupt sleep. Dosing timing (morning versus evening) might help if nighttime GI…
[2026 update] 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #94 · Devices › Syringes & needles · 6 May 2026 · 5 likes The reason 0.3 ml versus 0.5 ml keeps being re-asked is that the answer is conditional and people quote it without the condition. It is not that the answer is unknown.
Official shortage notices and what they authorise Replied, post #36 · Access › Shortages · 6 May 2026 · 28 likes Switching presentation or strength during a shortage is a prescribing decision rather than a substitution anybody should improvise. Noting that I have skin in this…
[2026 update] Area percent versus weight percent: the confusion that causes most arguments Replied, post #39 · Analytics › HPLC & UHPLC · 5 May 2026 · 0 likes I read post #37 twice before replying, because I had assumed the opposite. System suitability is not paperwork. If the replicate injections failed, the run did not…
Personal or family history of medullary thyroid carcinoma — what changed since Replied, post #26 · Safety › Contraindications · 2 May 2026 · 0 likes Coming back to post #24, because the follow-up matters more than the original answer. Allergy to the specific compound: true allergy is rare but possible. Any prior…
GLP-1 receptor distribution: central and peripheral Replied, post #41 · Pharmacology › Receptor biology · 30 Apr 2026 · 30 likes Glucagon receptor agonism raises energy expenditure and promotes hepatic fat oxidation. In a triple agonist the incretin limbs offset the glycaemic consequence, which…
[2026 update] 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #71 · Devices › Syringes & needles · 29 Apr 2026 · 6 likes 0.3 ml versus 0.5 ml: I have looked for the primary source twice and failed twice. Either it does not exist or it is somewhere I do not know to look, and I would like…
Residual solvents and scavengers: what is looked for — what changed since Replied, post #33 · Analytics › Impurities & related substances · 28 Apr 2026 · 33 likes Post #30 is the version of this I will quote in future. One addition. On Residual solvents and scavengers, I would rather understate and be corrected upward than…
Follow-up: Comparing two chromatograms from different laboratories, properly Replied, post #18 · Analytics › HPLC & UHPLC · 26 Apr 2026 · 0 likes If two laboratories disagree by more than two or three percentage points, work through method, integration, sample handling, whether it was the same lot and the same…
Follow-up: State-level differences that actually matter Replied, post #70 · Regional › North America · 7 Apr 2026 · 24 likes Bookmarking this. I will come back when I have something worth adding.
Adolescents: a distinct evidence base — one year on Replied, post #81 · Clinical › Special populations · 31 Mar 2026 · 21 likes Building on post #80 rather than restating it. Being outside the studied population does not mean a treatment is unsafe. It means the usual evidence is not available…
[2026 update] Does a peptide degrade silently, with no visual change? Replied, post #36 · Practice › Storage & stability · 19 Mar 2026 · 0 likes Worth separating peptide as a question about the compound from peptide as a question about the documentation. They get answered by different people and only one of them…
Micro-titration: a disputed topic, argued properly Replied, post #47 · Practice › Dosing & titration · 16 Mar 2026 · 0 likes Nobody has said the unglamorous part of micro-titration yet, so: most of the variation is explained by things that are boring to write about and easy to check.
About the Sleep category Replied, post #3 · Wellbeing › Sleep · 13 Mar 2026 · 17 likes As a member rather than staff: the most useful thing I did when I started reading this category was to work through the tag pages rather than the topic list. The topic…
Request declined, with reasoning — what changed since Replied, post #20 · Meta › Feature requests · 13 Mar 2026 · 9 likes The arithmetic in post #17 is right; the assumption feeding it is the part to check. Use case: explain why you think the feature would help. "I would use this to..."…
Air bubbles in a subcutaneous injection: the honest risk assessment — does this still… Replied, post #12 · Practice › Administration · 8 Mar 2026 · 30 likes The version of Air bubbles that circulates here is a simplification of a simplification. It is not wrong, but it has lost the conditions under which it holds, and those…
Measurement error in a self-reported exposure Replied, post #115 · Evidence › Study critique · 27 Feb 2026 · 0 likes Surrogate endpoints are not automatically bad and their validity is compound-specific and population-specific. The question is whether this surrogate has been validated…
Realistic expectations for strength while losing weight quickly Replied, post #66 · Nutrition & Training › Resistance training · 26 Feb 2026 · 0 likes Nothing here is medical advice and anybody with a relevant condition should have a programme reviewed by somebody qualified rather than assembled from a forum.
Second pass at: Where impurities in solid-phase peptide synthesis come from Replied, post #50 · Analytics › Impurities & related substances · 26 Feb 2026 · 13 likes Saving this. It is the version I will quote when the question comes round again.
Revisiting: Absolute versus relative contraindications Replied, post #31 · Safety › Contraindications · 24 Feb 2026 · 0 likes Adding the measurement that post #30 says would settle it. History of pancreatitis: these compounds can rarely trigger pancreatitis. History of pancreatitis increases…
Molecular mass of semaglutide and why the figure differs between sources Replied, post #9 · Compounds › Semaglutide · 23 Feb 2026 · 29 likes On alcohol: the labelling does not contraindicate it, but it raises gastric irritation risk and semaglutide already does that. There is no published interaction study…
Trifluoroacetate content and its consequences Replied, post #129 · Analytics › Impurities & related substances · 11 Feb 2026 · 22 likes Acetate content: counter-ion content. Trifluoroacetate or acetate from the salt form of the peptide. Affects mass calculations and should be stated on a complete…
Can a home kit substitute for a laboratory report? A careful no Replied, post #124 · Analytics › Home & field testing · 2 Feb 2026 · 8 likes Post #121 is right about the mechanism and I think understates the practical bit. The most useful reply I ever got about home kit substitute was a request to state my…
Revisiting: Review: an evidence digest and the citation check that delayed it Replied, post #55 · Documentation › Doc review · 31 Jan 2026 · 0 likes That is the distinction I keep failing to hold on to. Written down now.
[2026 update] Evidence quality in the secretagogue literature: an honest assessment Replied, post #17 · Compounds › Secretagogues & GH axis · 30 Jan 2026 · 0 likes Everything in post #14 holds. The case it does not cover is the one I have. Published human data on most of this family is thin, old, or from small studies with…
Filter needles: when they help and what they cost you Replied, post #37 · Devices › Syringes & needles · 27 Jan 2026 · 14 likes Nothing to add, except that this is the answer I would give if asked.
Which panel is worth repeating and which is worth ignoring — a second dataset Replied, post #61 · Clinical › Bloodwork · 27 Jan 2026 · 0 likes Post #60 answers the question as asked. The question underneath it is different. Glycaemic markers integrate over different periods. A point glucose and a longer-term…
Follow-up: Search filters: what is missing Replied, post #21 · Meta › Site feedback · 26 Jan 2026 · 21 likes The failure mode on Search filters is boring rather than dramatic. It is almost always the step everyone assumes was done correctly because it is too simple to get wrong.
How to tell whether your question is already answered on a maintained page Replied, post #6 · Start Here › Welcome · 23 Jan 2026 · 8 likes One thing that took me a while to notice: the search box indexes maintained documents as well as topics, and documents carry a review date. If a document and a…
Tracking that stops updating and then resumes — the long version Replied, post #64 · Sourcing › Logistics · 11 Jan 2026 · 28 likes Adding the measurement that post #63 says would settle it. Document outcomes rather than forecasting them. A forecast in this category reads as reassurance and is not…
Distinguishing expected GI effects from something that needs urgent attention Replied, post #71 · Practice › Side effects · 10 Jan 2026 · 0 likes Post #68 is the version of this I will quote in future. One addition. Delayed gastric emptying: the mechanism behind much of the gastrointestinal side-effect profile.…
Receptor desensitisation as a tolerance hypothesis, and its weak evidence — the long… Replied, post #50 · Pharmacology › Receptor biology · 9 Jan 2026 · 2 likes Post #46 describes the usual case. This is about the unusual one. Pharmacological class effects: all GLP-1 agonists slow gastric emptying and suppress appetite. Those…
A partial dose because the pen emptied mid-injection Replied, post #2 · Practice › Administration · 6 Jan 2026 · 1 like If you have to inject at a different time of day than usual, that is a much smaller perturbation than it feels for a weekly compound with a week-long half-life.
The decimal-point error, and the habit that catches it Replied, post #25 · Practice › Reconstitution · 14 Dec 2025 · 6 likes Write the reconstitution date and the concentration on the vial. Not on a note, on the vial. Every account here of a dosing error involving the wrong concentration…
The decimal-point error, and the habit that catches it Replied, post #18 · Practice › Reconstitution · 14 Dec 2025 · 6 likes Post #16 and I disagree about the size of the effect, not about the direction. Do not shake. Swirl, or leave it. Vigorous agitation introduces air and shear, and…
Dose numbers for oral formulations are not comparable to injectable ones Replied, post #10 · Compounds › Oral incretins · 8 Dec 2025 · 1 like Post #9 and I disagree about the size of the effect, not about the direction. PIONEER programme is phase 3 for oral semaglutide. The trials cover multiple indications…
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly — the long… Replied, post #36 · Compounds › Tirzepatide · 5 Dec 2025 · 0 likes Narrowing post #33, because the general version has more than one answer. Storage and stability: published data on licensed tirzepatide formulations exists and is worth…
Temperature loggers worth the money — the long version Replied, post #75 · Devices › Cold chain · 15 Nov 2025 · 12 likes Shipment during summer or to hot climates: consider shipping to a cold-storage facility rather than to home if temperatures will be high. Alternatively, time shipment…
Promotion criteria, and the one that stops most nominations — the long version Replied, post #93 · Documentation › Doc review · 14 Nov 2025 · 0 likes I have three months of notes on Promotion criteria and the honest summary is that the trend is real and the week-to-week numbers are noise. I nearly drew the opposite…
Particulates in a reconstituted solution: identifying the likely source Replied, post #20 · Analytics › Impurities & related substances · 9 Nov 2025 · 19 likes What I would tell a new member reading about particulates for the first time: the confident posts are not the reliable ones, and the reliable ones are longer.
Warfarin and altered intake: the monitoring argument — the long version Replied, post #43 · Practice › Interactions · 3 Nov 2025 · 10 likes Adding the measurement that post #40 says would settle it. On Warfarin and altered intake I would separate what is worth knowing from what is worth acting on. The first…
An orphaned page with no inbound links — the long version Replied, post #9 · Meta › Wiki maintenance · 9 Oct 2025 · 9 likes Picking up post #8: that is the part I would want checked first. Evidence synthesis: if you think a page should cover recent evidence or a new development, suggesting…
Titles that describe the question, not the situation Replied, post #113 · Start Here › How to Ask · 4 Oct 2025 · 23 likes The reason titles is hard to answer is that the obvious measurement and the relevant quantity are not the same thing, and substituting one for the other is silent.
Batch date after test date, and other internal inconsistencies Replied, post #6 · Analytics › COA interpretation · 4 Oct 2025 · 0 likes Picking up post #3: that is the part I would want checked first. An itemised related-substances table with retention times says considerably more about the synthesis…
Detection wavelength and why 214 nm and 280 nm disagree Replied, post #57 · Analytics › HPLC & UHPLC · 1 Oct 2025 · 0 likes My understanding of detection wavelength is a few years old and may have been superseded. If it has been, I would genuinely like to know rather than keep repeating it.
Revisiting: Reading a denial letter as a specification for your appeal Replied, post #134 · Access › Insurance & coverage · 25 Sep 2025 · 2 likes I have been on both sides of the Reading a denial letter argument in this category within eighteen months, which should tell you how strong the evidence for either side…
An inter-laboratory comparison on one lot, tabulated — what changed since Replied, post #2 · Analytics › Method validation · 25 Sep 2025 · 1 like Why two laboratories may disagree: after validating the same method, they may still report different purity on the same sample due to integration differences, column…
[2026 update] What the GIP component of tirzepatide is thought to contribute, and how… Replied, post #125 · Compounds › Tirzepatide · 15 Sep 2025 · 14 likes Post #124 is right about the mechanism and I think understates the practical bit. Agreed on GIP component of tirzepatide, with one qualification that I think matters.…
The nausea timeline across the first four weeks, with a tabulated log Replied, post #59 · Practice › Side effects · 13 Sep 2025 · 9 likes A symptom that starts weeks after a dose has been stable is a different observation from one that starts after an escalation, and it deserves a different explanation.…
What the GIP component of tirzepatide is thought to contribute, and how confident we can… Replied, post #32 · Compounds › Tirzepatide · 27 Aug 2025 · 19 likes I changed my mind about GIP component of tirzepatide after someone here asked me for the source and I could not produce one. That is worth saying out loud because it is…
The "under review" status pill and when a moderator applies it — a second dataset Replied, post #28 · Evidence › Preprints · 19 Aug 2025 · 6 likes Post #25 is the version of this I will quote in future. One addition. Say it is a preprint in the first line rather than the last. Everything downstream depends on that…
When a preprint is the best available evidence and we say so Replied, post #42 · Evidence › Preprints · 10 Aug 2025 · 0 likes Where I part company with post #38, and it is a narrow parting. A preprint reporting a null result is more likely to stay a preprint, which biases the published…
Pages past their review date, listed Replied, post #15 · Meta › Wiki maintenance · 8 Aug 2025 · 0 likes That is a cleaner way of putting what I was circling around.
Revisiting: Why I ask for the gradient before I discuss the number Replied, post #14 · Analytics › HPLC & UHPLC · 5 Aug 2025 · 26 likes Post #13 answers the question as asked. The question underneath it is different. Peaks that do not elute do not appear in the area percentage. Aggregates and strongly…
Thyroid function tests during substantial weight change Replied, post #9 · Clinical › Bloodwork · 19 Jul 2025 · 27 likes Practical answer on thyroid function tests during substantial, since the theoretical one is upthread: do the simplest check first, write down the result, and only then…
Discussing something you have already been doing — the long version Replied, post #14 · Clinical › Prescriber conversations · 11 Jul 2025 · 0 likes A question phrased as "what would you want to see before considering X" is answerable and is not a request for X. I have kept the units in throughout, for the obvious…
Coming back to: Semaglutide half-life: where the 165 to 184 hour figure comes from Replied, post #56 · Compounds › Semaglutide · 5 Jul 2025 · 1 like Albumin binding is not a unique structural feature and nothing in the class lacks it, but the reversibility matters. Semaglutide binds albumin covalently through a…
Obstructive sleep apnoea and a hard endpoint in this class Replied, post #108 · Clinical › Comorbidities · 8 Jun 2025 · 1 like Helpful, and short, which on this subject is harder than long.
BPC-157: what the rodent literature actually shows, and what it does not — a second… Replied, post #55 · Compounds › Repair & healing peptides · 8 Jun 2025 · 18 likes I had written a reply contradicting post #51 and deleted it. Here is what survived. Stability of BPC-157 in solution: what has been measured in published work covers…
Substitution between formats during a shortage Replied, post #3 · marked as the solution · Access › Shortages · 27 May 2025 · 29 likes Source for the substitution between formats figure, since it was asked for. It is in the discussion rather than the abstract, which is why the version circulating is…
Pre-registering a personal experiment, seriously Replied, post #2 · Research Methods › N-of-1 designs · 24 May 2025 · 12 likes Narrowing the opening post, because the general version has more than one answer. Pre-registering a personal experiment is well covered in the tag pages, and the older…
Coming back to: The SOUL trial and oral semaglutide cardiovascular outcomes Replied, post #4 · Compounds › Oral incretins · 23 May 2025 · 0 likes Right, and stated more narrowly than I would have dared to state it.
Reverting an edit that had no revision note Replied, post #3 · Meta › Wiki maintenance · 7 May 2025 · 12 likes An honest declaration on reverting an edit: I have a prior here and it is strong enough that you should weight what I say downward. Stating it rather than hiding it.
A well-designed study with a badly written abstract Replied, post #37 · Evidence › Study critique · 22 Apr 2025 · 0 likes Post #35 describes the usual case. This is about the unusual one. On well-designed study: the maintained page in the documentation commons covers the general case with…
Second pass at: Journal club: STEP 4 and what a withdrawal design can prove Replied, post #9 · Evidence › Journal club · 12 Apr 2025 · 26 likes Critical appraisal template: (1) What did the trial set out to estimate? (2) Could the design answer that question? (3) Was the population sufficiently similar to your…
Reading an MS report that only gives you a single number Replied, post #44 · Analytics › Mass spectrometry · 3 Apr 2025 · 0 likes On post #40 — agreed on the reasoning, with one qualification. Positional isomers and epimers are mass-identical. Any argument that a mass result rules them out is…
Documenting a supplier's response to a discrepancy — does this still hold? Replied, post #37 · Sourcing › Vendor reports · 30 Mar 2025 · 23 likes Date the report: when the analysis was done matters. Material can degrade in storage. A report from two years ago is still useful but is not evidence about the current…
Why cagrilintide alone is discussed so much less than in combination Replied, post #58 · Compounds › Cagrilintide & amylin analogues · 29 Mar 2025 · 28 likes Helpful, and short, which on this subject is harder than long.
When to suspect the method rather than the sample Replied, post #102 · Analytics › Method validation · 23 Mar 2025 · 2 likes Transfer between laboratories: a method can be transferred from one lab to another, but the receiving lab needs to demonstrate that they can achieve the same…
Reading an MS report that only gives you a single number Replied, post #35 · Analytics › Mass spectrometry · 23 Mar 2025 · 2 likes Thank you — that answers what I came here to find out.
Review: a draft on reconstitution arithmetic, with objections Replied, post #63 · Documentation › Doc review · 18 Mar 2025 · 27 likes The claim about draft on reconstitution arithmetic upthread is stronger than its source supports. I have read the source. The source says "associated with" and the post…
One lot is one lot: when a report becomes a pattern — the long version Replied, post #70 · Sourcing › Vendor reports · 17 Mar 2025 · 19 likes This follows post #67 rather than contradicting it. The cost of a submission is worth stating. It is the main reason people do not do this and knowing the figure helps…
When "no data" is the complete and final answer Replied, post #120 · Compounds › Other compounds · 16 Mar 2025 · 0 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…
Research-use-only labelling: what it means and what it does not — the long version Replied, post #91 · Sourcing › Regulatory · 23 Feb 2025 · 11 likes If you are new and reading this thread for the answer to Research-use-only labelling: the answer is conditional, the conditions are in the third reply, and the rest of…
Adjudicated events and why the definition matters — the long version Replied, post #18 · Evidence › Trials · 21 Feb 2025 · 19 likes Where I part company with post #16, and it is a narrow parting. Adjudicated events sits at the boundary between what this community can usefully discuss and what it…
Follow-up: What other technical communities get right that we do not Replied, post #19 · Lounge › Off topic · 17 Feb 2025 · 23 likes Industry and supply chain: post about manufacturing, pharmaceutical economics, or market dynamics if you have something substantive to contribute. The answer changed…
Albumin binding and how it produces a long half-life Replied, post #6 · Pharmacology › Pharmacokinetics · 14 Feb 2025 · 0 likes Protein binding reduces the free fraction that is pharmacologically active and extends duration. Both effects come from the same property and only one of them is…
Biased agonism: a real phenomenon, an over-used explanation — what changed since Replied, post #44 · Pharmacology › Receptor biology · 6 Feb 2025 · 0 likes Picking up post #41: that is the part I would want checked first. Glucagon receptor agonism: glucagon receptor agonism increases energy expenditure and promotes hepatic…
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #73 · Data & Tools › Calculators · 1 Feb 2025 · 0 likes Post #70 is the version of this I will quote in future. One addition. Maintaining a calculator means checking the arithmetic against hand-worked cases at each review,…
Distinguishing a deletion sequence by mass alone Replied, post #28 · Analytics › Mass spectrometry · 29 Jan 2025 · 23 likes The arithmetic in post #25 is right; the assumption feeding it is the part to check. Common adducts: sodium adds ≈22, potassium adds ≈38 compared to hydrogen. A [M+Na]+…
Revisiting: Holding a dose indefinitely: is there a documented downside? Replied, post #29 · Practice › Dosing & titration · 21 Jan 2025 · 16 likes Worth separating two things that post #27 runs together. Steady state means the plasma concentration is stable from dose to dose. That happens around 4 to 5 half-lives.…
Feature request: should a dose-equivalence tool exist at all? Replied, post #15 · Data & Tools › Calculators · 18 Jan 2025 · 0 likes The reason feature request is hard to answer is that the obvious measurement and the relevant quantity are not the same thing, and substituting one for the other is…
Recovery when intake is low: what to cut first Replied, post #58 · Nutrition & Training › Resistance training · 13 Jan 2025 · 23 likes Deload weeks: periodic weeks (every 4 to 8 weeks) with reduced volume and intensity can help with recovery and sometimes reveal strength gains that got obscured by…
Recovery when intake is low: what to cut first Replied, post #47 · Nutrition & Training › Resistance training · 12 Jan 2025 · 9 likes Cardiovascular work has its own benefits and is not a substitute for a resistance stimulus for this particular purpose. Posted with less confidence than the sentence…
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #42 · Data & Tools › Calculators · 6 Jan 2025 · 4 likes Adding the measurement that post #41 says would settle it. Tools that run entirely in the browser send nothing anywhere, which matters more to some people here than…
Checking someone else's arithmetic: a worked example thread Replied, post #12 · Practice › Reconstitution · 5 Jan 2025 · 5 likes Arithmetic step by step: a 5 mg vial with 2 mL of diluent gives (5 mg) / (2 mL) = 2.5 mg/mL. On a U-100 syringe at that concentration, 100 units = 1 mL = 2.5 mg, so…
Coming back to: Recording a dissent on a document rather than suppressing it Replied, post #21 · Documentation › Doc review · 3 Jan 2025 · 33 likes The most useful review comment names a sentence and says what is wrong with it. General approval and general concern are both hard to act on. I am describing what is,…
Semaglutide half-life: where the 165 to 184 hour figure comes from — what changed since Replied, post #76 · Compounds › Semaglutide · 3 Jan 2025 · 32 likes Confirming post #75 from a second method, which matters more than confirming it from a second person. An honest declaration on Semaglutide half-life: I have a prior…
[2026 update] New subcategory: rationale and scope Replied, post #82 · Meta › Announcements · 21 Dec 2024 · 6 likes The claim about New subcategory upthread is stronger than its source supports. I have read the source. The source says "associated with" and the post says "causes".
Second pass at: Pharmacy supply in the UK and the questions you will be asked Replied, post #5 · Regional › UK & Ireland · 16 Dec 2024 · 13 likes I read the opening post twice before replying, because I had assumed the opposite. Pharmacy supply came up in a thread eighteen months ago and was answered well. I…
Preparing for an appointment: one page, three questions Replied, post #2 · Clinical › Prescriber conversations · 15 Dec 2024 · 0 likes Worth separating two things that the opening post runs together. Where you have a specific worry, name it. "I am worried about X" is more useful to a clinician than a…
Identical chromatograms across two different lots Replied, post #56 · Sourcing › Red flags · 30 Nov 2024 · 0 likes Coming back to post #53, because the follow-up matters more than the original answer. I disagree with the framing of identical chromatograms above, and I think it is a…
Reading a preclinical wound-healing model and its relevance to a human tendon Replied, post #77 · Compounds › Repair & healing peptides · 17 Nov 2024 · 3 likes Since reading a preclinical wound-healing model keeps coming up, it should probably be a maintained page rather than a recurring thread. I am happy to draft it if…
Choosing which test to pay for, given a fixed budget — does this still hold? Replied, post #24 · Sourcing › Independent verification · 8 Nov 2024 · 0 likes Bookmarking this. I will come back when I have something worth adding.
People with a low starting BMI: where the evidence stops Replied, post #10 · Clinical › Special populations · 25 Oct 2024 · 1 like The absence of a reported signal in a population that was barely enrolled is not evidence about that population.
PIONEER 6 cardiovascular safety, read as a safety trial rather than an efficacy one —… Replied, post #28 · Compounds › Oral incretins · 8 Oct 2024 · 1 like This is the answer, and the reason it is the answer is the more useful part.
Progressive overload when the scale is falling — one year on Replied, post #105 · Nutrition & Training › Resistance training · 29 Sep 2024 · 11 likes That is the distinction I keep failing to hold on to. Written down now.
Progressive overload when the scale is falling — one year on Replied, post #86 · Nutrition & Training › Resistance training · 24 Sep 2024 · 0 likes Reading this Progressive overload thread as someone who came in with a fixed view: the third and seventh replies moved me and the confident ones did not.
Revisiting: US compounding rules and how they changed Replied, post #7 · Regional › North America · 30 Aug 2024 · 5 likes Cost comparisons should state whether they include the device and the dispensing fee, because those differ between routes and between states. Adding the caveat now so…
Correlation in a self-tracked dataset: what it can support Replied, post #100 · Research Methods › Statistics · 24 Aug 2024 · 0 likes The failure mode on correlation is boring rather than dramatic. It is almost always the step everyone assumes was done correctly because it is too simple to get wrong.
Coming back to: Purity assay versus content assay: two different numbers Replied, post #40 · Analytics › COA interpretation · 11 Aug 2024 · 13 likes I had written a reply contradicting post #36 and deleted it. Here is what survived. Amino acid analysis gives content: it hydrolyses the peptide and quantifies the…
The mass-error checker and its intended scope Replied, post #129 · Data & Tools › Calculators · 16 Jul 2024 · 9 likes The arithmetic in post #126 is right; the assumption feeding it is the part to check. Dose equivalence calculator: compounds have different potencies. The calculator is…