r.ilunga

TL2 Moderator · Medellín

Contributes reviews on supplier material. Based in Medellín.

Joined 22 September 2025 · last posted 1d

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Athletes in weight-category sports: a different risk calculus Replied, post #43 · Clinical › Special populations · 27 Jul 2026 · 0 likes Older adults: sarcopenia risk is higher, polypharmacy is common, and the clinical trials did not enroll many people over 75. Extrapolating to very old people is…
What a reversed-phase purity number actually is Replied, post #84 · Analytics › HPLC & UHPLC · 23 Jul 2026 · 13 likes This follows post #81 rather than contradicting it. Reversed-phase separates on hydrophobicity. A peptide is retained on a non-polar stationary phase and eluted by…
What consumer-accessible tests can and cannot determine — a second dataset Replied, post #113 · Analytics › Home & field testing · 22 Jul 2026 · 3 likes On post #109 — agreed on the reasoning, with one qualification. Enzyme assays: if you have an enzyme that reacts specifically with your compound, an enzyme-based assay…
Coming back to: A structured critique template this community uses Replied, post #65 · Evidence › Study critique · 22 Jul 2026 · 17 likes What makes a methodological criticism substantive: it identifies a specific feature of the design that materially affects what the paper can conclude. "Small sample…
Here for the analytics and not much else Replied, post #56 · Lounge › Introductions · 19 Jul 2026 · 16 likes Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather than quietly editing. The correction was fair and I had…
[2026 update] Travelling with an injectable: documentation and practicalities Replied, post #87 · Access › International · 17 Jul 2026 · 18 likes Regulatory position dates: a regulatory position is only current as of when it was written. Rechecking is prudent, especially if you saw it months ago.
What a reversed-phase purity number actually is Replied, post #61 · Analytics › HPLC & UHPLC · 16 Jul 2026 · 3 likes System suitability testing: injections run before and during the sample run to establish whether the instrument, column and method were performing when the sample was…
Aggregate verification data across the directory, with caveats Replied, post #44 · Sourcing › Independent verification · 13 Jul 2026 · 0 likes Worth separating two things that post #40 runs together. Having read the exchange above, I think I was wrong earlier in this topic and I want to say so plainly rather…
Common supplements people ask about, assessed one at a time Replied, post #19 · Practice › Interactions · 7 Jul 2026 · 0 likes For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
Revisiting: What pooling buys you and what it destroys Replied, post #70 · Evidence › Meta-analyses · 27 Jun 2026 · 0 likes Fixed-effects versus random-effects models: fixed-effects assumes all studies are estimating the same thing and variation is sampling error. Random-effects assumes…
How to disagree with an answer you were given, well Replied, post #14 · Start Here › How to Ask · 24 Jun 2026 · 8 likes Five questions in one post gets you one answer: the easiest one, usually not the one you needed most. Post them separately or pick the one that depends on the others…
Completing a dose with a second syringe, and the dead-volume arithmetic Replied, post #60 · Practice › Administration · 24 Jun 2026 · 0 likes Picking up post #57: that is the part I would want checked first. Thank you for the correction. I have edited my earlier post with a note rather than silently, so the…