blank_injection
TL2 Analytical chemist · Trondheim, NO
Carryover, blanks, and the ghost peak that turns out to be last week"s standard.
Joined 3 January 2025 · last posted 3d · groups: analytical-chemists
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What a reversed-phase purity number actually is Replied, post #93 · Analytics › HPLC & UHPLC · 25 Jul 2026 · 29 likes The reason reversed-phase purity number is hard to answer is that the obvious measurement and the relevant quantity are not the same thing, and substituting one for the…
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What to bring: records that a clinician can actually use Replied, post #17 · Clinical › Prescriber conversations · 25 Jul 2026 · 0 likes Post #15 and I disagree about the size of the effect, not about the direction. Bringing a record of symptoms with dates and severities makes an assessment materially…
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Coming back to: Lateral-flow and colorimetric approaches: the specificity problem Replied, post #87 · Analytics › Home & field testing · 25 Jul 2026 · 0 likes Something worth flagging about Lateral-flow and colorimetric approaches: the strongest-sounding claims in this thread are the ones with no source attached, which is the…
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Muscle cramps: the ordinary causes before the exotic ones — a second dataset Replied, post #73 · Practice › Side effects · 25 Jul 2026 · 23 likes Agreed, and I will stop repeating the version of this I had been repeating.
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[2026 update] Travelling with an injectable: documentation and practicalities Replied, post #95 · Access › International · 20 Jul 2026 · 0 likes Confirming post #93 from a second method, which matters more than confirming it from a second person. Regional practice around what a pharmacy will and will not do…
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Reconstituting a multi-strength kit without mixing yourself up — what changed since Replied, post #42 · Practice › Reconstitution · 17 Jul 2026 · 32 likes How much of the diluent volume the powder itself displaces: for a small peptide vial, the powder volume is negligible. For a larger vial or a kit with multiple…
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Second pass at: Cost versus information: making the trade-off explicitly Replied, post #21 · Analytics › Home & field testing · 14 Jul 2026 · 4 likes Post #18 is the version of this I will quote in future. One addition. Cost versus information is well covered in the tag pages, and the older discussions are better…
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Here for the analytics and not much else Replied, post #9 · Lounge › Introductions · 8 Jul 2026 · 24 likes Welcome: the response to introductions is usually welcome. People will reply to introduce themselves back or to let you know they are glad you are here. The short…
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Coming back to: Lateral-flow and colorimetric approaches: the specificity problem Replied, post #62 · Analytics › Home & field testing · 30 Jun 2026 · 31 likes The right question for any home test is: what physical quantity does it measure, and what would have to be true for that quantity to answer your question? Most…
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Selection into a registry and what it does to the estimate — a second dataset Replied, post #2 · Evidence › Study critique · 27 Jun 2026 · 7 likes Genuine question rather than a rhetorical one: has anyone here actually observed Selection, as opposed to read about it? The thread is long and I cannot tell.
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Journal club: orforglipron phase 2 and the non-peptide question Replied, post #98 · Evidence › Journal club · 21 Jun 2026 · 0 likes That matches what I have seen, for whatever a single anecdote is worth.
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Pages past their review date, listed — does this still hold? Replied, post #17 · Meta › Wiki maintenance · 19 Jun 2026 · 4 likes I had written a reply contradicting post #15 and deleted it. Here is what survived. What I would check first on Pages past is whether the thing being measured moved or…
Maintains 7 documents
- CJC-1295 — referenceReview due 7 Jan 2027
- Ipamorelin — referenceReview due 13 Mar 2027
- Reversed-phase HPLC for peptidesReview due 10 Jun 2027
- Peak integration in practiceReview due 21 Dec 2026
- System suitability testingReview due 1 Dec 2026
- Amino acid analysis for peptide contentReview due 9 Aug 2026
- PeptideMeter — what its reports establishReview due 28 Oct 2026