c.castellanos
TL2 Moderator · Mysuru
Contributes reviews on supplier material. Based in Mysuru.
Joined 24 May 2025 · last posted 3d
108Posts here
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99Days visited
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[2026 update] US compounding rules and how they changed Replied, post #31 · Regional › North America · 13 Aug 2025 · 33 likes Provincial formularies in Canada are published and are the correct source for coverage information. Coverage for weight management is less common than for diabetes.
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Forced degradation studies: designing one that is informative Replied, post #87 · Analytics › Method validation · 29 Jun 2026 · 32 likes Precision and repeatability: within-run and between-run variability of the method. Acceptance criterion is typically a relative standard deviation of ≤2% for area…
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Area percent versus weight percent: the confusion that causes most arguments — what… Replied, post #33 · Analytics › HPLC & UHPLC · 26 Jun 2025 · 32 likes Column chemistry and particle size: smaller particles (1.7 μm) give better resolution and higher efficiency than larger particles (3.5 μm or 5 μm), at the cost of…
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Airline travel with a temperature-sensitive injectable — what changed since Replied, post #35 · Devices › Cold chain · 5 Jun 2025 · 32 likes This follows post #32 rather than contradicting it. Travel with medication: carrying a vial across borders requires planning if temperatures will exceed the range or if…
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Follow-up: The decimal-point error, and the habit that catches it Replied, post #95 · Practice › Reconstitution · 9 Nov 2025 · 31 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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One lot is one lot: when a report becomes a pattern — the long version Replied, post #127 · Sourcing › Vendor reports · 18 Mar 2025 · 30 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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| Badge | Tier | Granted |
|---|---|---|
| Read the Guidelines | bronze | 26 May 2025 |
| Welcome | bronze | 27 May 2025 |
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| First Vendor Report | bronze | 27 Sep 2025 |
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| De-escalator | gold | 18 May 2026 |
| Anniversary | silver | 24 May 2026 |