d.vestergaard

TL2 · Angers

Contributes reviews on supplier material. Based in Angers.

Joined 9 January 2025 · last posted 10d · groups: regional-apac

71 posts, newest first. Showing up to 150.

Journal club: indirect comparison between two programmes, defended and attacked Replied, post #121 · Evidence › Journal club · 18 Jul 2026 · 19 likes What I would tell a new member reading about indirect comparison for the first time: the confident posts are not the reliable ones, and the reliable ones are longer.
Pinch or no pinch, and how needle length changes the answer — what changed since Replied, post #58 · Practice › Administration · 17 Jul 2026 · 2 likes I would call the community position on Pinch likely rather than established, and I would be comfortable defending that hedge.
Coming back to: Telehealth prescribing models in the US Replied, post #17 · Regional › North America · 16 Jul 2026 · 15 likes I read post #15 twice before replying, because I had assumed the opposite. United States: FDA licenses compounds. Prescribing and pharmacy practice are state-regulated.…
Review: a draft on reconstitution arithmetic, with objections — what changed since Replied, post #39 · Documentation › Doc review · 10 Jul 2026 · 11 likes Answering the question post #35 raises rather than the one it answers. Review date disputes: if a maintained page's review date is approaching and it has not been…
What a reversed-phase purity number actually is Replied, post #23 · Analytics › HPLC & UHPLC · 4 Jul 2026 · 22 likes I had written a reply contradicting post #19 and deleted it. Here is what survived. I disagree with the framing of reversed-phase purity number above, and I think it is…
Athletes in weight-category sports: a different risk calculus Replied, post #12 · Clinical › Special populations · 4 Jul 2026 · 31 likes Genetic and ancestry-related differences in response are asked about regularly and the published evidence is thin enough that the honest answer is short. The short…
What changed in 2026, by region — does this still hold? Replied, post #18 · Access › International · 26 Jun 2026 · 29 likes The most useful thing anyone can add to a thin regional thread is what the official source says and where it is, rather than what happened to them. Scoping that to what…
Why fasting instructions for oral semaglutide are not optional advice Replied, post #52 · Compounds › Oral incretins · 21 Jun 2026 · 21 likes Oral semaglutide's bioavailability is low and variable, which is why the dose numbers are an order of magnitude different from the injectable. That is a formulation…
Cost versus information: making the trade-off explicitly Replied, post #4 · Analytics › Home & field testing · 21 Jun 2026 · 18 likes Ultraviolet absorbance at 280 nanometres estimates concentration for peptides containing aromatic residues and gives nothing for peptides that do not. Knowing which…
Request: a per-category review queue Replied, post #45 · Meta › Feature requests · 18 Jun 2026 · 0 likes A definition problem is doing most of the work in this per-category review queue discussion. Once the term is pinned down I suspect the disagreement mostly goes away…
Carryover and the ghost peak from last week's standard — what changed since Replied, post #40 · Analytics › HPLC & UHPLC · 16 Jun 2026 · 3 likes This is the answer, and the reason it is the answer is the more useful part.
Insurance and replacement policies, compared Replied, post #21 · Sourcing › Logistics · 15 Jun 2026 · 15 likes Import restrictions by jurisdiction: what is legal to import for personal use varies enormously by country. Some jurisdictions are quite permissive; others are not.…
Racemisation and why it is invisible to a mass measurement Replied, post #79 · Analytics › Impurities & related substances · 13 Jun 2026 · 11 likes Trifluoroacetate is a counter-ion rather than an impurity, and it appears in the mass balance rather than in the chromatogram. Conflating the two accounts for several…
An appeal that succeeded, with the letter structure — the long version Replied, post #80 · Access › Insurance & coverage · 10 Jun 2026 · 0 likes A peer-to-peer review is available in many systems and is frequently more productive than a written appeal, because it is a conversation with somebody who can decide. I…
Pooling trials with different estimands Replied, post #16 · Evidence › Meta-analyses · 10 Jun 2026 · 0 likes Reading rather than answering, but this is the post I would point somebody at.
Personal import allowances, compared — a second dataset Replied, post #133 · Access › International · 30 May 2026 · 9 likes Answering the question post #129 raises rather than the one it answers. Summaries lag badly in this area. Where a decision matters, read the current official document…
Request: show the solution author in the topic list — what changed since Replied, post #51 · Meta › Feature requests · 2 May 2026 · 0 likes Community support: if other people support your request, they can reply with "+1" or "I would use that too". Widely-requested features are prioritised. I have kept the…
How to ask about something you suspect is a bad idea Replied, post #83 · Start Here › How to Ask · 1 May 2026 · 0 likes Context that matters: compound, how long in, current dose, relevant history. Context that does not matter: how you feel, your hopes for the outcome, your medical…
Converting between mg/mL and units per dose, both directions — the long version Replied, post #69 · Practice › Reconstitution · 22 Apr 2026 · 24 likes I read post #65 twice before replying, because I had assumed the opposite. Do not shake. Swirl, or leave it. Vigorous agitation introduces air and shear, and neither…
Common supplements people ask about, assessed one at a time — a second dataset Replied, post #83 · Practice › Interactions · 8 Apr 2026 · 0 likes Taking post #80 at face value and following it one step further. Trying to state the Common supplements position in a way that someone who disagrees would recognise as…
[2026 update] Area percent versus weight percent: the confusion that causes most arguments Replied, post #26 · Analytics › HPLC & UHPLC · 4 Apr 2026 · 1 like Mobile-phase preparation is a genuine source of between-laboratory variation. Acid concentration and organic modifier both shift retention, and neither is usually…
Blind submission and why it changes minds — the long version Replied, post #5 · Sourcing › Independent verification · 31 Mar 2026 · 0 likes Blind submission is worth one more sentence than it usually gets, and the sentence is the one about how the number was arrived at.
[2026 update] Confounding by indication, explained with a concrete example Replied, post #104 · Evidence › Study critique · 3 Mar 2026 · 0 likes Answering the question post #102 raises rather than the one it answers. Hold a trial to the standard something could actually have met. A criticism that no achievable…
Second pass at: Identical chromatograms across two different lots Replied, post #31 · Sourcing › Red flags · 27 Feb 2026 · 3 likes Nothing here should be read as an accusation against a named company, and the guidelines exist so that reports remain reports. I would put this at better than even and…
Preprint servers and what screening they do Replied, post #66 · Evidence › Preprints · 23 Feb 2026 · 5 likes I read the earlier replies on preprint servers twice before writing this, because I had assumed the opposite and wanted to be sure I was disagreeing with what was said…
[2026 update] Composite endpoints and the component doing the work Replied, post #3 · Evidence › Trials · 13 Feb 2026 · 18 likes Narrowing post #2, because the general version has more than one answer. A definition problem is doing most of the work in this Composite endpoints discussion. Once the…
[2026 update] Reading a supplementary appendix and finding the interesting part Replied, post #26 · Evidence › Trials · 2 Feb 2026 · 10 likes On post #22 — agreed on the reasoning, with one qualification. Adding a reference point for Reading a supplementary appendix. Mine is a single case, collected without…
[2026 update] Currency conversion and the cost you did not see Replied, post #6 · Sourcing › Payments · 12 Jan 2026 · 2 likes This is the first time the answer has come with its own limits attached. Appreciated.
Coming back to: Private prescribing in the UK: what is actually involved Replied, post #57 · Regional › UK & Ireland · 11 Jan 2026 · 1 like Summarising the Private prescribing thread so far, since it is long and the answer is buried: the first reply has the method, the fourth has the correction to it, and…
[2026 update] Storing lyophilised material long term: what governs the shelf life Replied, post #48 · Practice › Storage & stability · 9 Jan 2026 · 2 likes This is the sort of exchange that makes the archive worth searching.
Receptor desensitisation as a tolerance hypothesis, and its weak evidence — the long… Replied, post #28 · Pharmacology › Receptor biology · 26 Dec 2025 · 0 likes Amylin receptor signalling: amylin promotes satiety and slows gastric emptying through a receptor distinct from GLP-1. The hypothesis behind combination therapy is two…
The decimal-point error, and the habit that catches it Replied, post #40 · Practice › Reconstitution · 15 Dec 2025 · 8 likes Saving this. It is the version I will quote when the question comes round again.
Revisiting: Sample handling between despatch and injection Started this topic · Analytics › Method validation · 5 Dec 2025 · 41 likes Posting this under the heading it deserves: Revisiting: Sample handling between despatch and injection Everything below is what sits behind that. Reading back through…
Revisiting: Why tirzepatide titration schedules have more steps than semaglutide's Replied, post #31 · Compounds › Tirzepatide · 10 Nov 2025 · 0 likes Tirzepatide's half-life of roughly five days means steady state is approached in about three weeks rather than four. That is a real difference from semaglutide and it…
Second pass at: Programming during a large energy deficit Replied, post #66 · Nutrition & Training › Resistance training · 4 Nov 2025 · 20 likes Reduced appetite makes fuelling a session harder, and that is a practical problem with practical solutions rather than a reason to stop. It is a small point and it…
Pooling trials with different estimands — what changed since Replied, post #41 · Evidence › Meta-analyses · 24 Oct 2025 · 24 likes Post #37 describes the usual case. This is about the unusual one. Pooled estimates and heterogeneity: when trials differ in population, duration, or comparator, a…
A 40-week log with the measurement method stated Replied, post #57 · Outcomes › Progress reports · 23 Oct 2025 · 0 likes Non-scale victories: muscle gain or maintenance, clothing fit, energy level, and capability (like climbing stairs without breathlessness) are measurements that…
Cagrilintide's dosing interval and the pharmacokinetics behind it Replied, post #101 · Compounds › Cagrilintide & amylin analogues · 5 Oct 2025 · 23 likes Reconstitution at higher concentrations is worth avoiding for aggregation-prone material. The published formulation work generally uses lower concentrations than people…
Cagrilintide's dosing interval and the pharmacokinetics behind it Replied, post #27 · Compounds › Cagrilintide & amylin analogues · 2 Oct 2025 · 0 likes The monoisotopic mass sits near 3749.9 Da, and the same caveat applies as everywhere else: a mass consistent with the proposed structure is a necessary condition and…
Citing a preprint in a maintained document: our rule and its reasoning — does this still… Replied, post #70 · Evidence › Preprints · 1 Oct 2025 · 6 likes The confident answers on Citing a preprint and the well-sourced answers are not the same answers, which is the most useful thing I have learned reading this category.
Insomnia at a dose step: reported experiences Replied, post #9 · Wellbeing › Sleep · 6 Sep 2025 · 26 likes Reading rather than answering, but this is the post I would point somebody at.
Follow-up: Why the titration planner refuses to produce a schedule below a floor Replied, post #82 · Data & Tools › Calculators · 14 Aug 2025 · 15 likes The documentation on titration planner refuses is better than this thread and I say that as someone who has posted in the thread.
A field-by-field walk through a certificate of analysis Replied, post #71 · Analytics › COA interpretation · 16 Jul 2025 · 8 likes Where I part company with post #67, and it is a narrow parting. When method identifiers are missing: "reversed-phase HPLC" is less specific than "reversed-phase HPLC at…
Reading a chromatogram someone posted without axes Replied, post #45 · Analytics › HPLC & UHPLC · 14 Jun 2025 · 9 likes This settles it for me, at least until somebody posts a reason it should not.
Half-life, steady state, and accumulation worked through Replied, post #108 · Pharmacology › Pharmacokinetics · 13 Jun 2025 · 16 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. Adding the caveat…
Second pass at: Trial registration and comparing the protocol with the paper Replied, post #18 · Evidence › Trials · 7 Jun 2025 · 0 likes The estimand: what the trial set out to estimate. Two trials can be identical in structure but estimate different things by using different handling rules for people…
Follow-up: Requesting a page: what makes a good request Replied, post #44 · Documentation › Wiki requests · 5 Jun 2025 · 12 likes Accessibility feedback: if you have trouble accessing or reading a maintained page (screen reader issues, contrast problems, small text) report it. Accessibility matters.
Hepatic steatosis: what the MASH trial evidence supports Replied, post #48 · Clinical › Comorbidities · 25 May 2025 · 11 likes Right, and stated more narrowly than I would have dared to state it.
Micronutrient status when intake falls substantially Replied, post #5 · Clinical › Bloodwork · 15 May 2025 · 1 like What I want from this micronutrient status thread is the list of things that would need to be true for the claim to hold. If we can write that list, we can check it.
DXA precision and the least significant change for lean mass — the long version Replied, post #15 · Outcomes › Body composition · 7 May 2025 · 12 likes Trying to state the DXA precision position in a way that someone who disagrees would recognise as fair, because I do not think the version in this thread passes that…
Coming back to: Request: tag synonyms surfaced in search Replied, post #2 · Meta › Feature requests · 18 Apr 2025 · 4 likes This follows the opening post rather than contradicting it. Request: an export of my own posts. Not for any dramatic reason — I want to search my own history offline,…
Anxiety in the first weeks: drug, situation, or both Replied, post #73 · Wellbeing › Mental health · 10 Apr 2025 · 6 likes Anxiety is a good example of a question where the honest answer is boring and the interesting answers are unsupported. I would go with boring.
A promotion I argued against, and why I lost Replied, post #148 · Documentation › Doc review · 26 Mar 2025 · 2 likes Source for the promotion figure, since it was asked for. It is in the discussion rather than the abstract, which is why the version circulating is stronger than the…
Journal club: SURMOUNT-OSA and a hard endpoint in a soft field Replied, post #51 · Evidence › Journal club · 18 Mar 2025 · 23 likes Answering the question post #49 raises rather than the one it answers. Speaking only to SURMOUNT-OSA as I have actually seen it, rather than as it is usually described:…
Journal club: SUSTAIN 6 and its retinopathy signal — does this still hold? Replied, post #45 · Evidence › Journal club · 21 Feb 2025 · 4 likes Post #41 put the caveat in the right place and I want to underline it. Where the SUSTAIN 6 discussion usually stalls is that nobody wants to say "I do not know" and…
Reading a chromatogram someone posted without axes Replied, post #4 · Analytics › HPLC & UHPLC · 17 Feb 2025 · 0 likes The arithmetic in post #3 is right; the assumption feeding it is the part to check. Change the wavelength and the proportions change even though the sample has not.…
Coming back to: Official shortage notices and what they authorise Replied, post #22 · Access › Shortages · 16 Feb 2025 · 13 likes The most useful contribution is a link to the current official notice rather than an account of one pharmacy. I have separated what I observed from what I concluded,…
Cost per milligram, computed honestly across formats Replied, post #3 · Access › Pricing · 10 Feb 2025 · 4 likes The opening post answers the question as asked. The question underneath it is different. Landed cost including shipping, fees and currency conversion is what you…
What changed in 2026, by region Replied, post #78 · Access › International · 15 Jan 2025 · 5 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…
Coming back to: The nausea timeline across the first four weeks, with a tabulated log Replied, post #41 · Practice › Side effects · 11 Jan 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…
Semaglutide half-life: where the 165 to 184 hour figure comes from — what changed since Replied, post #69 · Compounds › Semaglutide · 24 Dec 2024 · 0 likes On dose steps: the four-week interval in the pivotal programme was a trial design choice, and slower escalation was not studied. That means the evidence supports not…
Building a sensible monitoring schedule with your prescriber Replied, post #106 · Clinical › Bloodwork · 23 Dec 2024 · 15 likes Grateful for the specificity. Vague answers to this question are what sent me looking.
Turnaround times and what they mean for a decision — one year on Replied, post #22 · Sourcing › Independent verification · 17 Dec 2024 · 11 likes Saving this. It is the version I will quote when the question comes round again.
Isotonicity and what happens when you get it wrong Replied, post #2 · Pharmacology › Formulation chemistry · 16 Dec 2024 · 9 likes Worth stating the null on isotonicity before we explain it: the observation may be nothing. That possibility deserves a sentence and usually does not get one.
When "no data" is the complete and final answer Replied, post #28 · Compounds › Other compounds · 25 Nov 2024 · 1 like Everything in post #26 holds. The case it does not cover is the one I have. Distinguishing marketed research compounds from true chemical synthesis: some online…
Second pass at: Choosing a concentration on purpose rather than by accident Replied, post #22 · Practice › Reconstitution · 22 Nov 2024 · 5 likes Narrowing post #21, because the general version has more than one answer. The reason Choosing a concentration is hard to answer is that the obvious measurement and the…
Splitting a vial for two laboratories: how to do it without ruining both — what changed… Replied, post #97 · Sourcing › Independent verification · 30 Sep 2024 · 13 likes Method has to travel with the number. A verification record without the method is not a record; it is a figure. I would rather be precise about what I do not know than…
Progressive overload when the scale is falling — one year on Replied, post #99 · Nutrition & Training › Resistance training · 28 Sep 2024 · 2 likes Building on post #98 rather than restating it. Genuine question rather than a rhetorical one: has anyone here actually observed Progressive overload, as opposed to read…
The topic list is dense — is that deliberate? Replied, post #28 · Meta › Site feedback · 20 Sep 2024 · 1 like Following, with nothing to contribute beyond having asked the same thing elsewhere.
Journal club: SURPASS-2 and the semaglutide 1 mg comparator Replied, post #41 · Evidence › Journal club · 12 Sep 2024 · 2 likes Adding the measurement that post #38 says would settle it. SURPASS-2 was covered in the wiki last year and the page has a review date on it, which is a better starting…
The topic list is dense — is that deliberate? Replied, post #8 · marked as the solution · Meta › Site feedback · 27 Jul 2024 · 8 likes Small correction to my own earlier position on topic list. I had the units the wrong way round, which changes the conclusion by an order of magnitude and therefore…