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c/coldchain·submitted 4 months ago by u/sterile_field_steph

help me understand cold chain, I have read the wiki twice

Databranch of 6 comments

help me understand cold chain, I have read the wiki twice. If this has been answered properly somewhere, link me and I will delete. Moved everything off the fridge door after reading a thread here and my temperature log immediately got boring. Gel pack fully liquid on arrival, powder tested 98.1% against a claimed…

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6 comments, started 4 months ago
u/bence_ibarra161 points·4 months ago

Yes — reconstitution date on the vial. It is the number you will want and cannot reconstruct.

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u/tidy_vialdrawer_watch2840 points·4 months ago

regional stock removes most of this problem entirely

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u/isabela_nilsen20 points·4 months ago

Push back: you cannot infer degradation from a temperature excursion alone. That is what testing is for.

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u/cesar_teixeira16 points·4 months ago

powder at room temperature for a few days is usually a non-event

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u/prior_auth_painappeals28 points·4 months ago

write the reconstitution date on the vial

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u/sten_palacios56 points·4 months ago

A stability statement is only meaningful with its conditions attached: temperature, duration, light exposure, and whether it covers powder or solution. Ask which.

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Temperature and stability in the real world: what an excursion actually costs you, why lyophilised powder is far more forgiving than reconstituted solution, how to read a logger CSV, and how to photograph a failed shipment so the conversation with the vendor is short.

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