dr_okonkwo
TL4 Moderator Moderator · Clinical · Leeds, UK
Consultant in diabetes and endocrinology; moderate the clinical categories. Everything I post here is general information for a public forum and is explicitly not advice about your care. I am strict about that line and I would rather be boring than wrong.
Joined 1 May 2024 · last posted 17h · groups: staff, moderators, clinicians, trust-level-4
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A 10 mg vial reconstituted three different ways, compared Replied, post #35 · Practice › Reconstitution · 27 Jul 2026 · 0 likes Why "add 2 mL" is not an instruction: the powder in the vial takes up space. "Add 2 mL to a 10 mL vial" and "add 2 mL of diluent so the final volume is approximately 2…
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Blinding yourself: practical methods and their limits — the long version Replied, post #12 · Research Methods › N-of-1 designs · 27 Jul 2026 · 0 likes Confounding in personal experiments: other things change when you start a medication (season, exercise, diet, stress). Documenting those confounders helps you…
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[2026 update] Interpreting a result that disagrees with the supplier's certificate Replied, post #124 · Sourcing › Independent verification · 26 Jul 2026 · 9 likes Interpreting a result: a purity figure is one measurement on one vial on one day. Agreement across two services is much stronger. A single high number does not…
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Journal club: SUSTAIN 6 and its retinopathy signal Replied, post #114 · Evidence › Journal club · 25 Jul 2026 · 2 likes SURMOUNT-1 (N Engl J Med 2022): Tirzepatide obesity trial. The largest mean weight reduction for a pharmacological intervention at publication. Read the categorical…
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[2026 update] Antibiotics and a course of something with delayed emptying Replied, post #85 · Practice › Interactions · 24 Jul 2026 · 3 likes This follows post #82 rather than contradicting it. Supplements and herbs: many have no established interaction. Some do. If you are taking something unusual, checking…
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Request: tag synonyms surfaced in search Replied, post #25 · Meta › Feature requests · 24 Jul 2026 · 1 like post #24 is right about the mechanism and I think understates the practical bit. Deprecation requests: if you think a feature should be removed or changed, that is also…
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Follow-up: How compounding permissions changed when supply normalised Replied, post #64 · Sourcing › Regulatory · 24 Jul 2026 · 20 likes Picking up post #61: that is the part I would want checked first. Research-use-only status is a legal classification, not a safety classification. It means the compound…
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Molecular mass of semaglutide and why the figure differs between sources Replied, post #106 · Compounds › Semaglutide · 21 Jul 2026 · 4 likes Gastric emptying delay is the mechanism behind most of the gastrointestinal side effects. Slowing the stomach empties it feeds less food into the intestines at a time,…
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What a certificate commits its issuer to Replied, post #69 · Analytics › COA interpretation · 20 Jul 2026 · 26 likes I read post #67 twice before replying, because I had assumed the opposite. Endotoxin testing is separate: a certificate of purity says nothing about endotoxin. A…
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Semaglutide and gastric emptying — the mechanism behind most of the side-effect profile Replied, post #111 · Compounds › Semaglutide · 19 Jul 2026 · 1 like This follows post #108 rather than contradicting it. Approved indications differ by jurisdiction and change. As of mid-2026 the weight-management indication is approved…
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What a reversed-phase purity number actually is Replied, post #59 · Analytics › HPLC & UHPLC · 16 Jul 2026 · 28 likes Area percent is not mass percent. It is a proportion of absorbance, weighted by each species' extinction coefficient. For closely related impurities the approximation…
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Seven-day rolling means and why weekly readings mislead Replied, post #39 · Outcomes › Progress reports · 16 Jul 2026 · 24 likes Seasonal patterns: some people report weight loss is slower in winter than summer. Body composition and activity changes might contribute. Noting the season is useful…