m.guerrero

TL2 · Plovdiv

Contributes reviews on supplier material. Based in Plovdiv.

Joined 1 May 2025 · last posted 4d · groups: regional-apac, newcomer-guides

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Revisiting: PCOS and metabolic overlap: what is and is not studied Replied, post #59 · Clinical › Comorbidities · 24 Jul 2026 · 7 likes Multiple comorbidities: a person with diabetes, kidney disease, and cardiovascular disease is outside the studied populations in most trials. Extrapolating to that…
Angle of injection and whether 90 degrees is always right — the long version Replied, post #48 · Practice › Administration · 17 Jul 2026 · 5 likes The version of Angle of injection that circulates here is a simplification of a simplification. It is not wrong, but it has lost the conditions under which it holds,…
Why a glucagon receptor agonist in a weight-loss compound is not a contradiction Replied, post #36 · Compounds › Retatrutide · 16 Jul 2026 · 17 likes Post #32 and I disagree about the size of the effect, not about the direction. One more thing on glucagon receptor agonist that took me far too long to see: the two…
Journal club: what we got wrong in an earlier session Replied, post #76 · Evidence › Journal club · 12 Jul 2026 · 3 likes The baseline characteristics table is the single most useful page for the questions that get asked here, because it tells you who the result applies to.
How shortages have affected compounding permissions Replied, post #32 · Access › Shortages · 12 Jul 2026 · 26 likes Post #30 describes the usual case. This is about the unusual one. Speaking only to shortages as I have actually seen it, rather than as it is usually described: the…
Follow-up: Reading an interaction checker output critically Replied, post #41 · Practice › Interactions · 11 Jul 2026 · 13 likes Second this, and I would have said it less carefully.
Spreadsheets: an appreciation — what changed since Replied, post #95 · Lounge › Off topic · 9 Jul 2026 · 3 likes The strongest argument against my own position on Spreadsheets, stated as well as I can state it, since nobody else has yet.
Reflectance and photometric devices: precision in practice — a second dataset Replied, post #67 · Analytics › Home & field testing · 7 Jul 2026 · 2 likes Answering the question post #63 raises rather than the one it answers. Reading back through the Reflectance and photometric devices threads from last year, the same…
Follow-up: Comparing two chromatograms from different laboratories, properly Replied, post #51 · Analytics › HPLC & UHPLC · 29 Jun 2026 · 16 likes Method validation is the demonstration that a method can separate the compound from its degradation products and impurities reliably. A method that cannot resolve an…
Revisiting: The best-written scientific paper you have read Replied, post #51 · Lounge › Off topic · 25 Jun 2026 · 22 likes Humour: light, relevant humour is welcome. Cruel humour targeting individuals or groups is not. I have seen it go both ways, which is why I hedge.
Second pass at: Which categories are strict and which are relaxed, honestly Replied, post #77 · Start Here › Welcome · 18 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…
Racemisation and why it is invisible to a mass measurement Replied, post #90 · Analytics › Impurities & related substances · 13 Jun 2026 · 0 likes Truncation products are substantially lower in mass and usually well separated chromatographically, which makes them the easiest class to see and the least likely to be…