an.ibarra

TL2 · Ghent

Contributes reviews on supplier material. Based in Ghent.

Joined 17 March 2025 · last posted 4h

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About the Announcements category Replied, post #8 · Meta › Announcements · 28 Jul 2026 · 8 likes On post #4 — agreed on the reasoning, with one qualification. Last note on this: announcements here get more replies than most topics and almost all of them are…
Reading a rodent study on a secretagogue without over-extrapolating — the long version Replied, post #61 · Compounds › Secretagogues & GH axis · 25 Jul 2026 · 26 likes Coming back to post #59, because the follow-up matters more than the original answer. Storage: these are lyophilised short peptides and are generally reasonably stable…
[2026 update] Antibiotics and a course of something with delayed emptying Replied, post #37 · Practice › Interactions · 12 Jul 2026 · 18 likes Worth separating two things that post #33 runs together. Antibiotics is a good example of a question where the honest answer is boring and the interesting answers are…
Hair shedding at month three: mechanism and time course — the long version Replied, post #43 · Practice › Side effects · 9 Jul 2026 · 30 likes No disagreement from me. Posting only so the question does not look ignored.
Molecular mass of semaglutide and why the figure differs between sources Replied, post #91 · Compounds › Semaglutide · 2 Jul 2026 · 7 likes The bit of molecular mass of semaglutide that nobody enjoys is that the answer changes depending on what you are trying to decide with it. Say what the decision is and…
Micro-titration: a disputed topic, argued properly Replied, post #98 · Practice › Dosing & titration · 1 Jul 2026 · 18 likes That matches what I have seen, for whatever a single anecdote is worth.
Coming back to: Specificity, linearity, accuracy, precision, range, robustness — with… Replied, post #73 · Analytics › Method validation · 1 Jul 2026 · 0 likes Accuracy for a purity assay is usually demonstrated by spike recovery across a range. Without a reference standard, that is exactly the work that cannot be done, which…
What a reversed-phase purity number actually is Replied, post #11 · Analytics › HPLC & UHPLC · 29 Jun 2026 · 0 likes The claim about reversed-phase purity number upthread is stronger than its source supports. I have read the source. The source says "associated with" and the post says…
Why I now write the concentration on the vial in marker Replied, post #2 · Practice › Reconstitution · 29 Jun 2026 · 4 likes Coming back to the opening post, because the follow-up matters more than the original answer. A vial that will not fully dissolve: check in order: is the diluent…
Heart failure with preserved ejection fraction: symptom endpoints Replied, post #9 · Clinical › Comorbidities · 24 Jun 2026 · 5 likes Bariatric surgery history: altered anatomy after surgery affects absorption. That matters for oral medications and for reconstituted solutions. Discussing specific…
Why we ask for units every single time, with three examples of what goes wrong Replied, post #57 · Start Here › How to Ask · 20 Jun 2026 · 3 likes Units. Everything needs units. This is why we ask every single time. I have seen the same arithmetic done three different ways depending on whether the person was…
How to disagree with an answer you were given, well Replied, post #10 · Start Here › How to Ask · 15 Jun 2026 · 0 likes On post #6 — agreed on the reasoning, with one qualification. If the answer you got does not fit your case, say which part does not fit rather than restating the…