isotonic_sheet
TL3 Regular · Brno, CZ
Laboratory background. Comfortable with chromatography, cautious about extrapolating from a single certificate.
Joined 31 December 2024 · last posted 7d · groups: analytical-chemists
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How shortages have affected compounding permissions Replied, post #56 · Access › Shortages · 21 Jul 2026 · 16 likes I read the earlier replies on shortages twice before writing this, because I had assumed the opposite and wanted to be sure I was disagreeing with what was said rather…
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Splitting an overlong document into two Replied, post #33 · Documentation › Wiki requests · 18 Jul 2026 · 3 likes Whatever the answer on splitting an overlong document turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public,…
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Journal club: what we got wrong in an earlier session Replied, post #85 · Evidence › Journal club · 15 Jul 2026 · 14 likes Suggest the next paper at the end of the session rather than by message afterwards. The room has just worked out what it wants to know next. Two sources, same…
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Why chargeback is not the safety net people assume Replied, post #24 · Sourcing › Payments · 11 Jul 2026 · 7 likes Where a supplier issues a quote with an expiry, honouring it after the expiry is a courtesy rather than an entitlement, and several here have found it granted.
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I have no scientific background — can I still follow the analytics categories? Replied, post #32 · Start Here › Welcome · 3 Jul 2026 · 11 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…
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How shortages have affected compounding permissions Replied, post #12 · Access › Shortages · 3 Jul 2026 · 0 likes That is consistent with mine, for whatever one more account is worth.
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Prescription requirements and telehealth models — a second dataset Replied, post #87 · Sourcing › Regulatory · 1 Jul 2026 · 22 likes An indication approved for one age range does not extend to another, and paediatric extensions are separate decisions with separate evidence. I would be glad to be…
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Submitting a sample: the process end to end Replied, post #39 · Sourcing › Independent verification · 26 Jun 2026 · 4 likes Repeat testing: if you want to verify the same lot a second time, testing with a different service strengthens the conclusion. Testing with the same service verifies…
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Why the absence of controlled human data on BPC-157 matters more than people admit Replied, post #44 · Compounds › Repair & healing peptides · 18 Jun 2026 · 19 likes This settles it for me, at least until somebody posts a reason it should not.
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Racemisation and why it is invisible to a mass measurement Replied, post #36 · Analytics › Impurities & related substances · 10 Jun 2026 · 17 likes Incomplete deprotection leaves a protecting group attached, raising the mass substantially and usually pushing retention much later. A late-eluting peak on a peptide…
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Naming conventions for research peptides and the confusion they cause Replied, post #13 · Compounds › Other compounds · 9 Jun 2026 · 3 likes Thymosin alpha-1 has a regulatory history in several jurisdictions and a real clinical literature, which puts it in a different evidential category from most of its…
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Reading a trial's population section before its results Replied, post #87 · Evidence › Trials · 4 Jun 2026 · 0 likes The arithmetic in post #85 is right; the assumption feeding it is the part to check. Trial duration determines what can be observed. A weight-change trajectory at 40…
Maintains 1 document
- VendorInvestigate — what its reports establishReview due 18 Nov 2026