an.ibarra

TL2 Moderator · 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. Staff-only posts: some announcements are visible only to staff (concerning internal operations). Members…
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. Why this subcategory is stricter about sourcing than most: the evidence base is…
[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. Vitamins: most vitamins have no significant interaction. Fat-soluble vitamins (A, D, E, K) might be affected by…
Hair shedding at month three: mechanism and time course — the long version Replied, post #43 · Practice › Side effects · 9 Jul 2026 · 30 likes Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
Molecular mass of semaglutide and why the figure differs between sources Replied, post #91 · Compounds › Semaglutide · 2 Jul 2026 · 7 likes The SELECT trial changed the positioning because it was the first cardiovascular outcome trial in people without diabetes. That decoupled the cardiovascular argument…
Micro-titration: a disputed topic, argued properly Replied, post #98 · Practice › Dosing & titration · 1 Jul 2026 · 18 likes Practical note that does not fit anywhere else. Whatever you conclude from this topic, write down what you did and when. The single most useful thing in your own…
Coming back to: Specificity, linearity, accuracy, precision, range, robustness — with… Replied, post #73 · Analytics › Method validation · 1 Jul 2026 · 0 likes Forced degradation studies: deliberately stress the material with acid, base, oxidant, heat, light to generate degradation products and demonstrate that the method can…
What a reversed-phase purity number actually is Replied, post #11 · Analytics › HPLC & UHPLC · 29 Jun 2026 · 0 likes This is why a purity figure without the underlying chromatogram is weaker evidence than it appears. It is also why two competent laboratories can report different…
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 PCOS and metabolic overlap: polycystic ovary syndrome has metabolic overlap with obesity and insulin resistance. Data on compounds in this class in PCOS specifically is…
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 Chromatogram questions: describe the method first. Column type, gradient, wavelength, detection method. Everything else follows from method. A chromatogram without…
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. Units. Everything needs units. This is why we ask every single time. I have seen the same arithmetic done…