Devices · Cold chain

Domestic fridge temperature mapping: a cheap experiment

Devices › Cold chain cold chain temperature excursion storage freeze-thaw

n.brobergTL2 Moderator1 Mar 2025#1

Domestic fridge temperature mapping: a cheap experiment Writing it up because I had to work it out twice and would rather nobody else did.

I have read the maintained page on this and I still have a gap, so I am asking rather than guessing.

Context: semaglutide, 21 weeks in, currently at a dose I reached by the standard four-week steps. Everything below is my own record rather than anything a clinician told me.

The specific question is the one in the title. What I have already checked: the labelling summary on the relevant documentation page, the two most-linked topics in this subcategory, and my own notes from the last 14 weeks. What I could not find is whether the answer changes at higher doses or whether it is the same arithmetic throughout.

If the answer is "it depends", I would rather know what it depends on than be given a number.

50 likes 17mo

ar.petrovTL2 Moderator20 Apr 2025 · edited#2

the opening post is right about the mechanism and I think understates the practical bit.

Shipping container and cold packs: reputable suppliers use insulated containers with cold packs designed to arrive cool. Checking on arrival that cold packs are still cold is a sign the chain was maintained.

13 likes 15mo

m.duarteTL2 Moderator27 May 2025#3

Freeze-thaw: some peptides tolerate freezing; others do not. Check your compound's labelling. Generally, repeated freeze-thaw is worse than single freeze-thaw.

2 likes 14mo

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