p.mbeki
TL2 · Groningen
Contributes reviews on supplier material. Based in Groningen.
Joined 4 September 2025 · last posted 2d
72Posts here
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Coming back to: Delayed gastric emptying and oral medication absorption: which drugs… Replied, post #72 · Practice › Interactions · 26 Jul 2026 · 10 likes Vitamins: most vitamins have no significant interaction. Fat-soluble vitamins (A, D, E, K) might be affected by the slowing of fat absorption during weight loss, but…
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Irish differences from the UK position — what changed since Replied, post #5 · Regional › UK & Ireland · 20 Jul 2026 · 0 likes Worth separating Irish differences as a question about the compound from Irish differences as a question about the documentation. They get answered by different people…
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Semaglutide and gastric emptying — the mechanism behind most of the side-effect profile Replied, post #97 · Compounds › Semaglutide · 9 Jul 2026 · 33 likes Where I have landed on semaglutide and gastric emptying, having got it wrong once in public: the direction is clear, the magnitude is not, and anyone quoting a precise…
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Purity assay versus content assay: two different numbers Replied, post #10 · Analytics › COA interpretation · 30 Jun 2026 · 1 like Post #8 describes the usual case. This is about the unusual one. Water content by Karl Fischer is worth having on a lyophilised product because residual water is both a…
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Why retatrutide discussion here is more cautious than elsewhere — one year on Replied, post #25 · Compounds › Retatrutide · 29 Jun 2026 · 18 likes My position on retatrutide discussion is current rather than settled. I have revised it once already and I expect to again, so treat it accordingly.
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Submitting a sample: the process end to end Replied, post #24 · Sourcing › Independent verification · 18 Jun 2026 · 4 likes On submitting a sample the community has more anecdote than the confidence in this thread implies, and I include my own contribution in that.
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Racemisation and why it is invisible to a mass measurement Replied, post #16 · Analytics › Impurities & related substances · 9 Jun 2026 · 14 likes Adding thanks rather than a view. I do not have a view worth the space.
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Bioimpedance and hydration: why the number moves Replied, post #57 · Outcomes › Body composition · 8 Jun 2026 · 0 likes If you are new and reading this thread for the answer to bioimpedance and hydration: the answer is conditional, the conditions are in the third reply, and the rest of…
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Revisiting: Primary endpoint hierarchies and why order matters Replied, post #20 · Evidence › Trials · 10 May 2026 · 0 likes Post #17 is right about the mechanism and I think understates the practical bit. What I can speak to on Primary endpoint hierarchies is narrow, so I will keep it narrow…
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Trust level 3 requirements: a clarification — does this still hold? Replied, post #43 · Meta › Announcements · 8 May 2026 · 1 like This follows post #42 rather than contradicting it. What I would want before treating Trust level 3 requirements as settled: the method, the sample, and whether anyone…
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How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ — does this still hold? Replied, post #6 · Sourcing › Independent verification · 23 Apr 2026 · 0 likes Careful with the language on Janoshik. "Not detected" and "not present" are different findings and the first is a statement about the method.
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Ultrasound and skinfolds: operator dependence in practice — what changed since Replied, post #35 · Outcomes › Body composition · 14 Apr 2026 · 11 likes Bioimpedance is considerably less precise and is strongly affected by hydration state, which is why readings move overnight without anything having changed.