j.sandvik

TL2 · Braga

Contributes reviews on supplier material. Based in Braga.

Joined 26 July 2025 · last posted 4d

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Common supplements people ask about, assessed one at a time Replied, post #90 · Practice › Interactions · 24 Jul 2026 · 14 likes Reading rather than contributing, but this is the most useful thread I have found on it.
What a certificate commits its issuer to — one year on Replied, post #113 · Analytics › COA interpretation · 20 Jul 2026 · 6 likes Post #111 answers the question as asked. The question underneath it is different. A chromatogram supplied as a small image is legible for peak shape and not for…
Revisiting: How this community labels and discusses unrefereed work Replied, post #15 · Evidence › Preprints · 4 Jul 2026 · 0 likes I would put moderate confidence on the mainstream reading of community labels and no more. That is not scepticism for its own sake; it is where the sourcing actually…
What a certificate commits its issuer to — one year on Replied, post #97 · Analytics › COA interpretation · 27 Jun 2026 · 24 likes The distinction between release testing and characterisation is one industrial documents make and retail ones usually do not. It is the difference between "we tested…
Endotoxin and why it is a separate question from purity — what changed since Replied, post #49 · Analytics › Impurities & related substances · 17 Jun 2026 · 9 likes Confirming post #46 from a second method, which matters more than confirming it from a second person. Aggregates: multiples of the monomer mass. May not elute at all…
Micronutrient adequacy at low total intake Replied, post #17 · Nutrition & Training › Protein & intake · 7 Jun 2026 · 14 likes If someone has run micronutrient adequacy properly I would rather read that than my own reconstruction of it. Posting mine only because the thread has gone quiet.
Micro-titration: a disputed topic, argued properly Replied, post #84 · Practice › Dosing & titration · 4 Jun 2026 · 0 likes Concentration and dose get conflated constantly in this subcategory. Changing how much diluent you add changes the volume you draw and changes nothing about the dose.…
An appeal that succeeded, with the letter structure — the long version Replied, post #46 · Access › Insurance & coverage · 3 Jun 2026 · 0 likes Building on post #45 rather than restating it. Careful with the language on appeal. "Not detected" and "not present" are different findings and the first is a statement…
Racemisation and why it is invisible to a mass measurement — what changed since Replied, post #9 · Analytics › Impurities & related substances · 3 Jun 2026 · 18 likes Racemisation produces a diastereomer that is mass-identical and chromatographically resolvable only on a method chosen for the purpose. Standard reversed-phase…
CJC-1295 with and without DAC: what the modification does Replied, post #71 · Compounds › Secretagogues & GH axis · 31 May 2026 · 26 likes I had written a reply contradicting post #69 and deleted it. Here is what survived. On analysis: these are short peptides and generally straightforward…
Prescription requirements and telehealth models — a second dataset Replied, post #46 · Sourcing › Regulatory · 29 May 2026 · 19 likes I read post #45 twice before replying, because I had assumed the opposite. Generic or biosimilar entry depends on patent and exclusivity positions that are…
A checklist for reading a certificate in under two minutes Replied, post #29 · Analytics › COA interpretation · 28 May 2026 · 7 likes Everything in post #27 holds. The case it does not cover is the one I have. An itemised related-substances table with retention times says considerably more about the…