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 System suitability testing: injections run before and during the sample run to establish whether the instrument, column and method were performing when the sample was…
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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 I read post #15 twice before replying, because I had assumed the opposite. Discussing off-label dosing: if you want to dose differently than the label specifies (slower…
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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 Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was 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 Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
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[2026 update] Travelling with an injectable: documentation and practicalities Replied, post #95 · Access › International · 20 Jul 2026 · 0 likes post #94 is right about the mechanism and I think understates the practical bit. Insurance and coverage: coverage decisions are national. A compound approved in one…
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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 A vial that will not fully dissolve: check in order: is the diluent genuinely room temperature (some preservatives crystallise in cold), is the vial being warmed gently…
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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 This follows post #18 rather than contradicting it. What physical quantity does the device measure? A colorimetric or lateral-flow method typically responds to a class…
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Here for the analytics and not much else Replied, post #9 · Lounge › Introductions · 8 Jul 2026 · 24 likes I read post #7 twice before replying, because I had assumed the opposite. Welcome: the response to introductions is usually welcome. People will reply to introduce…
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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 Lateral-flow devices: like a rapid COVID test. They have a reagent strip and produce a colour result. They are quick but not precise and not intended for quantitative…
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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 Two things before anyone answers the substance. First, the context in the first post is clear and specific. Second, the question is framed so that an answer can…
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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 I read post #96 twice before replying, because I had assumed the opposite. Two things before anyone answers the substance. First, the context in the first post is clear…
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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 read post #15 twice before replying, because I had assumed the opposite. Practical note that does not fit anywhere else. Whatever you conclude from this topic, write…
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