j.vogel

TL2 · Nantes

Contributes reviews on supplier material. Based in Nantes.

Joined 24 December 2024 · last posted 1d

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[2026 update] Antibiotics and a course of something with delayed emptying Replied, post #96 · Practice › Interactions · 27 Jul 2026 · 0 likes Adding a note of thanks rather than an opinion. I did not know most of that.
A structured critique template this community uses — a second dataset Replied, post #48 · Evidence › Study critique · 24 Jul 2026 · 0 likes I would put moderate confidence on the mainstream reading of structured critique template and no more. That is not scepticism for its own sake; it is where the sourcing…
Rotating between abdomen, thigh and upper arm: absorption differences — one year on Replied, post #99 · Practice › Administration · 21 Jul 2026 · 15 likes This follows post #96 rather than contradicting it. If you have to inject at a different time of day than usual, that is a much smaller perturbation than it feels for a…
What a certificate commits its issuer to Replied, post #54 · Analytics › COA interpretation · 18 Jul 2026 · 0 likes Peptide content and chromatographic purity are separate determinations and a certificate that reports only one has answered only one question. Content is the one that…
Aggregate verification data across the directory, with caveats Replied, post #52 · Sourcing › Independent verification · 17 Jul 2026 · 30 likes Aggregate verification data came up in a thread eighteen months ago and was answered well. I cannot find it, which is itself the problem, so here is the reconstruction.
Selection into a registry and what it does to the estimate — a second dataset Replied, post #19 · Evidence › Study critique · 15 Jul 2026 · 4 likes Statistical significance and clinical importance are different and both are needed. A significant difference below the minimal important difference is a real finding of…
What a reversed-phase purity number actually is Replied, post #42 · Analytics › HPLC & UHPLC · 10 Jul 2026 · 18 likes Before anything else: what was the gradient, and at what wavelength? Area percent at different wavelengths is not the same number even on the same sample because…
Peak-to-trough ratio at steady state for a weekly agent — the long version Replied, post #45 · Pharmacology › Pharmacokinetics · 8 Jul 2026 · 0 likes Peak-to-trough ratio is one of those subjects where the general answer and the answer for a specific case diverge, and the thread will go in circles until someone says…
[2026 update] Interpreting a result that disagrees with the supplier's certificate Replied, post #73 · Sourcing › Independent verification · 8 Jul 2026 · 8 likes Helpful, and easy to find again, which is half of what a good reply is.
Micro-titration: a disputed topic, argued properly — one year on Replied, post #56 · Practice › Dosing & titration · 29 Jun 2026 · 0 likes Something worth flagging about Micro-titration: the strongest-sounding claims in this thread are the ones with no source attached, which is the usual pattern and not a…
Publication patterns in the BPC-157 literature, examined Replied, post #21 · Compounds › Repair & healing peptides · 25 Jun 2026 · 0 likes This follows post #19 rather than contradicting it. The pentadecapeptide sequence is short and stable enough to survive conditions that would degrade a larger peptide,…
Coming back to: Lateral-flow and colorimetric approaches: the specificity problem Replied, post #56 · Analytics › Home & field testing · 23 Jun 2026 · 7 likes Post #55 answers the question as asked. The question underneath it is different. False positives and false negatives: no test has 100% sensitivity and 100% specificity.…