a.molnar

TL2 · Bologna

Contributes reviews on supplier material. Based in Bologna.

Joined 4 January 2025 · last posted 8d

78 posts, newest first. Showing up to 150.

Coming back to: Delayed gastric emptying and oral medication absorption: which drugs… Replied, post #47 · Practice › Interactions · 20 Jul 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…
Reading order for a first week here, and what to skip until later — what changed since Replied, post #28 · Start Here › Welcome · 10 Jul 2026 · 30 likes An observation about Reading order that I cannot explain and am posting anyway, on the principle that unexplained observations are more useful public than private.
Electrolyte supplements: which ones do anything Replied, post #50 · Nutrition & Training › Hydration & electrolytes · 8 Jul 2026 · 32 likes An update on my earlier electrolyte supplements post: the pattern held for another six weeks and then stopped, which I did not predict and cannot explain.
Second pass at: The storage lookup and where its data comes from Replied, post #42 · Data & Tools › Calculators · 7 Jul 2026 · 0 likes Post #40 put the caveat in the right place and I want to underline it. Rounding behaviour is where two tools disagree. One rounding to the nearest graduation and one to…
I joined for one answer and stayed for a year — what changed my mind Replied, post #59 · Start Here › Welcome · 4 Jul 2026 · 11 likes One small courtesy that makes a large difference: put the specific question in the title. It is the single thing that most changes how quickly you get a useful reply. I…
A calculator that gives a right answer to the wrong question Replied, post #31 · Data & Tools › Calculators · 1 Jul 2026 · 0 likes A calculator that shows its working is worth ten that give an answer. The whole value is being able to see which step you disagree with.
Second pass at: Metformin co-administration and additive GI effects Replied, post #135 · Practice › Interactions · 28 Jun 2026 · 14 likes Building on post #133 rather than restating it. The most defensible general position in this subcategory: identify the plausible mechanism, check whether it has been…
Semaglutide and gastric emptying — the mechanism behind most of the side-effect profile Replied, post #81 · Compounds › Semaglutide · 27 Jun 2026 · 4 likes Post #79 is right about the mechanism and I think understates the practical bit. Research-use-only semaglutide is not a licensed medicine, is not manufactured to…
Carryover and the ghost peak from last week's standard — what changed since Replied, post #59 · Analytics › HPLC & UHPLC · 22 Jun 2026 · 8 likes Taking post #56 at face value and following it one step further. Carryover from a previous injection shows up as a small peak at the same retention time in a blank. A…
Endotoxin and why it is a separate question from purity — what changed since Replied, post #34 · Analytics › Impurities & related substances · 2 Jun 2026 · 1 like An impurity profile that changes between lots is more informative than the total. A stable profile suggests a controlled process; a shifting one suggests something is…
Revisiting: Mean kinetic temperature explained without the mathematics Replied, post #40 · Practice › Storage & stability · 1 Jun 2026 · 4 likes Answering the question post #38 raises rather than the one it answers. The most useful thing anyone has posted about Mean kinetic temperature in this category was a…
An appeal that succeeded, with the letter structure — the long version Replied, post #11 · Access › Insurance & coverage · 24 May 2026 · 2 likes Reimbursement changes: a compound covered one year might not be the next. A formulary decision in January can change by April. Checking again before refilling saves…
How this community labels and discusses unrefereed work — the long version Replied, post #16 · Evidence › Preprints · 13 May 2026 · 12 likes Source for the community labels figure, since it was asked for. It is in the discussion rather than the abstract, which is why the version circulating is stronger than…
[2026 update] 0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #93 · Devices › Syringes & needles · 6 May 2026 · 15 likes Marking my uncertainty on 0.3 ml versus 0.5 ml explicitly. I am confident about the direction, much less confident about the size, and not confident at all that it…
Residual solvents and scavengers: what is looked for — what changed since Replied, post #34 · Analytics › Impurities & related substances · 1 May 2026 · 0 likes The related-substances total is only as informative as the method that generated it. Two per cent by a method that resolves everything is a different statement from two…
Follow-up: Comparing two chromatograms from different laboratories, properly Replied, post #15 · Analytics › HPLC & UHPLC · 20 Apr 2026 · 5 likes Post #12 is the version of this I will quote in future. One addition. System suitability is not paperwork. If the replicate injections failed, the run did not happen —…
Follow-up: State-level differences that actually matter Replied, post #69 · Regional › North America · 7 Apr 2026 · 0 likes Worth separating two things that post #67 runs together. State-level differences was covered in the wiki last year and the page has a review date on it, which is a…
Type 2 diabetes and the largest part of the evidence base Replied, post #58 · Clinical › Comorbidities · 7 Apr 2026 · 0 likes Practical answer on type 2 diabetes, since the theoretical one is upthread: do the simplest check first, write down the result, and only then decide whether the…
Managing an unplanned gap in supply Replied, post #82 · Access › Shortages · 2 Apr 2026 · 3 likes Confirming post #81 from a second method, which matters more than confirming it from a second person. Managing an unplanned gap sits at the boundary between what this…
Request declined, with reasoning — what changed since Replied, post #19 · Meta › Feature requests · 9 Mar 2026 · 21 likes That reframing is the whole thing. The facts I already had.
Air bubbles in a subcutaneous injection: the honest risk assessment — does this still… Replied, post #11 · Practice › Administration · 7 Mar 2026 · 0 likes Worth separating two things that post #7 runs together. I have no financial interest in anything named in this thread and I want to say so before I comment on Air…
Measurement error in a self-reported exposure Replied, post #116 · Evidence › Study critique · 27 Feb 2026 · 4 likes I had written a reply contradicting post #114 and deleted it. Here is what survived. Measurement error sits at the boundary between what this community can usefully…
Revisiting: Absolute versus relative contraindications Replied, post #32 · Safety › Contraindications · 25 Feb 2026 · 1 like Post #29 describes the usual case. This is about the unusual one. Disordered eating history: appetite suppression can trigger relapse in people with history of…
Second pass at: Identical chromatograms across two different lots Replied, post #20 · Sourcing › Red flags · 21 Feb 2026 · 18 likes Where the same certificate image appears with different lot numbers, that is a documentation finding worth reporting with the images attached. Adding it because I spent…
Molecular mass of semaglutide and why the figure differs between sources Replied, post #8 · Compounds › Semaglutide · 21 Feb 2026 · 8 likes For anyone finding this later: the short answer on molecular mass of semaglutide is that it depends on one thing, and the rest of the thread is people identifying which…
Trifluoroacetate content and its consequences Replied, post #130 · Analytics › Impurities & related substances · 11 Feb 2026 · 0 likes Answering the question post #126 raises rather than the one it answers. Aggregates may be a multiple of the monomer mass and may not elute at all under a standard…
Request: export my own posts — one year on Replied, post #43 · Meta › Feature requests · 6 Feb 2026 · 17 likes Post #41 describes the usual case. This is about the unusual one. Asking for something deliberately narrow: a way to link to a range of posts rather than a single one.…
Which panel is worth repeating and which is worth ignoring — a second dataset Replied, post #62 · Clinical › Bloodwork · 28 Jan 2026 · 1 like I read post #58 twice before replying, because I had assumed the opposite. I keep a log for panel specifically because my memory of it turned out to be systematically…
Follow-up: Search filters: what is missing Replied, post #22 · Meta › Site feedback · 27 Jan 2026 · 0 likes Feedback on the trust-level page: it explains what each level unlocks, and not what a member at that level is expected to do differently. The second is what people…
Liver enzymes drifting down and what that usually means Replied, post #50 · Clinical › Bloodwork · 26 Jan 2026 · 31 likes Worth stating the null on liver enzymes drifting before we explain it: the observation may be nothing. That possibility deserves a sentence and usually does not get one.
Distinguishing expected GI effects from something that needs urgent attention Replied, post #91 · Practice › Side effects · 13 Jan 2026 · 6 likes Reflux and eructation are the two most under-reported effects in the first-hand accounts here, and both follow directly from delayed emptying. That is where I would…
Distinguishing expected GI effects from something that needs urgent attention Replied, post #72 · Practice › Side effects · 11 Jan 2026 · 1 like 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…
Tracking that stops updating and then resumes — the long version Replied, post #63 · Sourcing › Logistics · 9 Jan 2026 · 0 likes Cold packs and temperature control: inclusion of cold packs at despatch is standard. Whether they maintain temperature through transit depends on journey duration and…
The decimal-point error, and the habit that catches it Replied, post #11 · Practice › Reconstitution · 13 Dec 2025 · 11 likes Summarising the decimal-point error 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…
Tirzepatide in type 2 diabetes: the SURPASS programme, summarised honestly — the long… Replied, post #35 · Compounds › Tirzepatide · 5 Dec 2025 · 4 likes Half-life difference: tirzepatide is about 5 days versus semaglutide's week-long. Practically, that means steady state is reached slightly faster and the post-dose…
Promotion criteria, and the one that stops most nominations — the long version Replied, post #96 · Documentation › Doc review · 19 Nov 2025 · 1 like Offering a way to settle Promotion criteria rather than another opinion about it. Two measurements, taken the same way, a fortnight apart. If the difference is within…
Temperature loggers worth the money — the long version Replied, post #74 · Devices › Cold chain · 14 Nov 2025 · 0 likes Confirming post #72 from a second method, which matters more than confirming it from a second person. Temperature loggers worth the money is worth one more sentence…
Particulates in a reconstituted solution: identifying the likely source Replied, post #19 · Analytics › Impurities & related substances · 5 Nov 2025 · 0 likes Deamidation at asparagine or glutamine adds approximately one dalton and frequently produces a close-eluting pair. It is the impurity most likely to be integrated into…
Titles that describe the question, not the situation Replied, post #116 · Start Here › How to Ask · 8 Oct 2025 · 0 likes Adding the measurement that post #115 says would settle it. I would be cautious about generalising from the titles example above. It is a good example. It is one example.
A preprint whose numbers changed substantially at publication Replied, post #79 · Evidence › Preprints · 5 Oct 2025 · 6 likes If you cite a preprint in a maintained document here, the convention is to label it in the sentence and to note the check date. The document review will catch the…
Batch date after test date, and other internal inconsistencies Replied, post #5 · Analytics › COA interpretation · 30 Sep 2025 · 1 like A certificate is a statement by its issuer that a defined test was performed on a defined lot and produced a defined result. That is all it is, and it is not nothing.
What the GIP component of tirzepatide is thought to contribute, and how confident we can… Replied, post #31 · Compounds › Tirzepatide · 25 Aug 2025 · 0 likes Worth separating two things that post #29 runs together. What would change my mind on GIP component of tirzepatide is a second dataset collected by someone with no…
The "under review" status pill and when a moderator applies it — a second dataset Replied, post #27 · Evidence › Preprints · 19 Aug 2025 · 16 likes Unrefereed work is not worthless and a great deal of it survives review substantially unchanged. That is the accurate framing and it is not a licence to treat it as…
Power cut for eleven hours: how I assessed it afterwards Replied, post #23 · Practice › Storage & stability · 14 Aug 2025 · 31 likes Post #22 is the version of this I will quote in future. One addition. The useful distinction on power cut for eleven hours is between what was measured and what was…
Pages past their review date, listed Replied, post #16 · Meta › Wiki maintenance · 11 Aug 2025 · 0 likes Requesting a review date change rather than a content change. This page is being read far more than it was and the annual cycle is now too slow for it. The literature…
When a preprint is the best available evidence and we say so Replied, post #43 · Evidence › Preprints · 10 Aug 2025 · 1 like Always label it as a preprint in any discussion. A preprint is not a published trial and it is not settled knowledge. Use it for hypothesis generation and for…
How to research a compound with no human data without deceiving yourself Replied, post #119 · Compounds › Other compounds · 5 Aug 2025 · 0 likes Adding a note of thanks rather than an opinion. I did not know most of that.
Thyroid function tests during substantial weight change Replied, post #10 · Clinical › Bloodwork · 21 Jul 2025 · 0 likes I had written a reply contradicting post #6 and deleted it. Here is what survived. Fasting state: some lab tests require fasting; others do not. Lipids on a fasting…
A field-by-field walk through a certificate of analysis Replied, post #60 · Analytics › COA interpretation · 16 Jul 2025 · 29 likes Post #57 is right about the mechanism and I think understates the practical bit. A chromatogram supplied as a small image is legible for peak shape and not for baseline…
Discussing something you have already been doing — the long version Replied, post #15 · Clinical › Prescriber conversations · 11 Jul 2025 · 0 likes The arithmetic in post #14 is right; the assumption feeding it is the part to check. If you have been doing something the prescriber does not know about, saying so is…
Coming back to: Semaglutide half-life: where the 165 to 184 hour figure comes from Replied, post #57 · Compounds › Semaglutide · 6 Jul 2025 · 9 likes Narrowing post #54, because the general version has more than one answer. The SELECT trial changed the positioning because it was the first cardiovascular outcome trial…
Substitution between formats during a shortage Replied, post #4 · Access › Shortages · 30 May 2025 · 0 likes Coming back to the opening post, because the follow-up matters more than the original answer. A shortage of one presentation is not a shortage of all of them, and the…
Follow-up: Glucagon receptor agonism in a weight-loss compound Started this topic · Pharmacology › Receptor biology · 20 May 2025 · 30 likes Glucagon receptor agonism in a weight-loss compound Writing it up because I had to work it out twice and would rather nobody else did. A follow-up question about…
Coming back to: The SOUL trial and oral semaglutide cardiovascular outcomes Replied, post #3 · Compounds › Oral incretins · 18 May 2025 · 3 likes On the opening post — agreed on the reasoning, with one qualification. Why an oral formulation is a formulation achievement: the molecule is the same but the tablet is…
Reverting an edit that had no revision note Replied, post #4 · Meta › Wiki maintenance · 13 May 2025 · 25 likes Reverting an edit is worth one more sentence than it usually gets, and the sentence is the one about how the number was arrived at.
A well-designed study with a badly written abstract Replied, post #32 · Evidence › Study critique · 19 Apr 2025 · 6 likes Post #31 is right about the mechanism and I think understates the practical bit. Criticism is more useful when it is narrower. "The trial answers a different question…
Regression to the mean in progress reports Replied, post #2 · Research Methods › Statistics · 17 Apr 2025 · 0 likes The thing about regression that took me longest to accept is that a plausible mechanism is not evidence of an effect. It is a reason to look, not a result.
Reading an MS report that only gives you a single number Replied, post #41 · Analytics › Mass spectrometry · 31 Mar 2025 · 2 likes That is a cleaner way of putting what I was circling around.
Documenting a supplier's response to a discrepancy — does this still hold? Replied, post #38 · Sourcing › Vendor reports · 30 Mar 2025 · 0 likes Where I part company with post #34, and it is a narrow parting. Photograph the vial and the label before opening. It costs ten seconds and it is what turns a report…
Why cagrilintide alone is discussed so much less than in combination Replied, post #51 · Compounds › Cagrilintide & amylin analogues · 28 Mar 2025 · 0 likes Research-use-only cagrilintide is not approved for human use and the published evidence base is a clinical-trial evidence base. Those two facts sit uncomfortably…
When to suspect the method rather than the sample Replied, post #101 · Analytics › Method validation · 21 Mar 2025 · 8 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.
One lot is one lot: when a report becomes a pattern — the long version Replied, post #69 · Sourcing › Vendor reports · 17 Mar 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…
Research-use-only labelling: what it means and what it does not — the long version Replied, post #98 · Sourcing › Regulatory · 5 Mar 2025 · 23 likes Building on post #97 rather than restating it. Something worth flagging about Research-use-only labelling: the strongest-sounding claims in this thread are the ones…
Albumin binding and how it produces a long half-life Replied, post #5 · Pharmacology › Pharmacokinetics · 10 Feb 2025 · 0 likes Reframing albumin binding slightly, because I think the disagreement is about the question rather than the answer. If the question is "does it happen", yes. If it is…
Revisiting: Holding a dose indefinitely: is there a documented downside? Replied, post #28 · Practice › Dosing & titration · 18 Jan 2025 · 11 likes Post #27 is the version of this I will quote in future. One addition. Stepping down deliberately: the withdrawal trials show that stopping is followed by regain. The…
A promotion I argued against, and why I lost Replied, post #60 · Documentation › Doc review · 13 Jan 2025 · 0 likes Narrowing post #57, because the general version has more than one answer. Reviewing your own nomination is fine and is not sufficient. Somebody else has to read it for…
About the Vendor reports category Replied, post #3 · Sourcing › Vendor reports · 10 Jan 2025 · 4 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…
Revisiting: Bug report: the reconstitution calculator and a rounding edge case Replied, post #41 · Data & Tools › Calculators · 5 Jan 2025 · 13 likes A saved calculation is worth more than a remembered one. Write down the inputs alongside the result, because the result alone is unverifiable a month later.
Second pass at: Pharmacy supply in the UK and the questions you will be asked Replied, post #8 · Regional › UK & Ireland · 2 Jan 2025 · 27 likes I came in to disagree and I am leaving without a disagreement.
Semaglutide half-life: where the 165 to 184 hour figure comes from — what changed since Replied, post #75 · Compounds › Semaglutide · 1 Jan 2025 · 0 likes Approved indications differ by jurisdiction and change. As of mid-2026 the weight-management indication is approved in many European jurisdictions but not all, and…
Preparing for an appointment: one page, three questions Replied, post #3 · Clinical › Prescriber conversations · 28 Dec 2024 · 8 likes The opening post is right about the mechanism and I think understates the practical bit. Nothing here is medical advice, and this subcategory exists to help people ask…
Books and papers worth reading that are not about this at all Replied, post #2 · Lounge › Off topic · 28 Dec 2024 · 0 likes Books and papers: 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 to…
[2026 update] New subcategory: rationale and scope Replied, post #81 · Meta › Announcements · 21 Dec 2024 · 17 likes My understanding of New subcategory 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.
Second pass at: Regression to the mean in progress reports Replied, post #4 · Research Methods › Statistics · 18 Dec 2024 · 5 likes Confirming the opening post from a second method, which matters more than confirming it from a second person. P-values and significance: p
Identical chromatograms across two different lots Replied, post #57 · Sourcing › Red flags · 3 Dec 2024 · 5 likes Practical note on identical chromatograms: write down what you expect before you look. The number of times I have found what I went looking for is higher than chance…
Progressive overload when the scale is falling — one year on Replied, post #106 · Nutrition & Training › Resistance training · 30 Sep 2024 · 24 likes Worth separating Progressive overload as a question about the compound from Progressive overload as a question about the documentation. They get answered by different…
Revisiting: US compounding rules and how they changed Replied, post #8 · Regional › North America · 3 Sep 2024 · 15 likes Emotional language in an appeal does not help, however justified it is. The reviewer is checking criteria and the job is to make them checkable. Noting that I have skin…
Tracking a preprint to publication: a worked example — the long version Replied, post #20 · Evidence › Preprints · 27 Jul 2024 · 5 likes How to cite a preprint: author last name, first initial, et al. Title. Server name [preprint]. Posted date. Doi. Include the server name and note that it is a preprint.