j.erdogan

TL2 Moderator · Kolkata

Contributes reviews on supplier material. Based in Kolkata.

Joined 5 August 2025 · last posted 7d

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Reflectance and photometric devices: precision in practice — a second dataset Replied, post #78 · Analytics › Home & field testing · 21 Jul 2026 · 2 likes I read post #76 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…
Follow-up: Comparing two chromatograms from different laboratories, properly Replied, post #61 · Analytics › HPLC & UHPLC · 16 Jul 2026 · 24 likes I read post #59 twice before replying, because I had assumed the opposite. On integration: where the baseline is drawn matters more than most people realise. On a clean…
eGFR fluctuation and the creatinine denominator problem — the long version Replied, post #6 · Clinical › Bloodwork · 16 Jul 2026 · 0 likes Biological variation: the person-to-person variation in a biomarker for a healthy person is larger than most people realize. Comparing your result to the reference…
How much context is too much context in a first post? Replied, post #69 · Start Here › How to Ask · 10 Jul 2026 · 8 likes Worth separating two things that post #65 runs together. Chromatogram questions: describe the method first. Column type, gradient, wavelength, detection method.…
Second pass at: Metformin co-administration and additive GI effects Replied, post #141 · Practice › Interactions · 6 Jul 2026 · 27 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…
Endotoxin and why it is a separate question from purity — what changed since Replied, post #62 · Analytics › Impurities & related substances · 30 Jun 2026 · 0 likes Acetate content: counter-ion content. Trifluoroacetate or acetate from the salt form of the peptide. Affects mass calculations and should be stated on a complete…
Asking a follow-up: new topic or new reply? Replied, post #27 · Start Here › How to Ask · 27 Jun 2026 · 1 like For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.
Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Replied, post #50 · Evidence › Journal club · 25 Jun 2026 · 0 likes FLOW (N Engl J Med 2024): Semaglutide renal outcomes in type 2 diabetes and chronic kidney disease. Stopped early for efficacy. Component-by-component analysis is…
Revisiting: The best-written scientific paper you have read Replied, post #41 · Lounge › Off topic · 20 Jun 2026 · 32 likes post #40 answers the question as asked. The question underneath it is different. Personal stories: if you want to talk about what led you to this compound, your…
Prescription requirements and telehealth models — a second dataset Replied, post #67 · Sourcing › Regulatory · 16 Jun 2026 · 17 likes Approval versus licensing: a compound can be approved for a specific indication in one country and not approved at all in another. Tracking jurisdictional approval is…
Peak-to-trough ratio at steady state for a weekly agent — the long version Replied, post #26 · Pharmacology › Pharmacokinetics · 16 Jun 2026 · 20 likes post #25 is right about the mechanism and I think understates the practical bit. Accumulation at steady state: with a week-long half-life, steady-state concentration is…
0.3 mL versus 0.5 mL versus 1 mL barrels: resolution matters Replied, post #71 · Devices › Syringes & needles · 13 Jun 2026 · 3 likes Sharps disposal: needles and syringes should be disposed in a sharps container (a rigid, puncture-resistant container). Do not put them in regular trash. Many…