PSundberg
TL2 Member · Jönköping, SE
Practical questions, practical answers. Not interested in speculation without a source.
Joined 31 July 2025 · last posted 6d
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Insomnia at a dose step: reported experiences — the long version Replied, post #50 · Wellbeing › Sleep · 22 Jul 2026 · 0 likes Appetite suppression and nighttime eating: if nighttime eating was a pattern, appetite suppression changes that pattern. Sleep can worsen if nighttime waking is…
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What a regulator's shortage notice actually authorises Replied, post #10 · Sourcing › Regulatory · 20 Jul 2026 · 1 like Off-label use and medical practice: clinicians can prescribe approved medications off-label under some circumstances. That is different from research-use-only…
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Which categories are strict and which are relaxed, honestly Replied, post #31 · Start Here › Welcome · 20 Jul 2026 · 0 likes I disagree with the reply above, and I think the disagreement is substantive rather than terminological. The distinction being drawn does not survive when you look at…
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Request: tag synonyms surfaced in search Replied, post #18 · Meta › Feature requests · 14 Jul 2026 · 0 likes Duplicate requests: if several people request the same feature, the requests often get merged. Check whether your feature has already been suggested before posting.
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[2026 update] Detection wavelength and why 214 nm and 280 nm disagree Replied, post #25 · Analytics › HPLC & UHPLC · 10 Jul 2026 · 0 likes Detection wavelength: 214 nm detects the peptide bond and is relatively insensitive to composition. 280 nm detects aromatic residues and is strongly…
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When a dose reduction is the correct response to a side effect Replied, post #37 · Practice › Dosing & titration · 9 Jul 2026 · 2 likes Coming back to post #35, because the follow-up matters more than the original answer. The arithmetic of an intermediate dose: if the label says 1.0 mg and 2.0 mg, a…
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GHRH analogues versus ghrelin mimetics: different mechanisms, conflated discussion Replied, post #37 · Compounds › Secretagogues & GH axis · 5 Jul 2026 · 17 likes Why this subcategory is stricter about sourcing than most: the evidence base is weaker and that is precisely why documentation quality matters more. A supplier page…
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Journal club: SUSTAIN 6 and its retinopathy signal Replied, post #10 · Evidence › Journal club · 30 Jun 2026 · 0 likes I read post #8 twice before replying, because I had assumed the opposite. Critical appraisal template: (1) What did the trial set out to estimate? (2) Could the design…
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Carryover and the ghost peak from last week's standard — what changed since Replied, post #82 · Analytics › HPLC & UHPLC · 28 Jun 2026 · 11 likes Reversed-phase separates on hydrophobicity. A peptide is retained on a non-polar stationary phase and eluted by increasing organic solvent. For peptides the mobile…
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Second pass at: Absence of evidence and evidence of absence Replied, post #29 · Research Methods › Statistics · 24 Jun 2026 · 0 likes post #28 answers the question as asked. The question underneath it is different. Number needed to treat: how many people need to be treated to prevent one bad outcome…
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Carryover and the ghost peak from last week's standard — what changed since Replied, post #61 · Analytics › HPLC & UHPLC · 22 Jun 2026 · 0 likes On post #57 — agreed on the reasoning, with one qualification. Before anything else: what was the gradient, and at what wavelength? Area percent at different…
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[2026 update] A vial that will not fully dissolve: what to check and in what order Replied, post #117 · Practice › Reconstitution · 19 Jun 2026 · 2 likes post #116 is right about the mechanism and I think understates the practical bit. Osmolarity and reconstitution: the osmolarity of the reconstituted solution affects…