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c/coldchain·posted 1 year ago by u/ines_lindqvist

[Question] how do you actually verify stability

Question Cold Box ×3 Clean Column ×1 Receipts ×1

Week 9 update. 10kg down from the start, early fullness basically gone since about week 49.

Things that worked: consistency, protein at breakfast, walking more than I want to. Things that did not: everything I bought on the internet to help with early fullness.

The part that surprised me is how much of this is admin. Ordering, storing, logging, remembering. Nobody mentions that the hard bit is not the drug, it is the routine.

Happy to answer anything. Please do not ask me what dose you should be on.

3,436 up / 308 down92% upvoted52 commentsid 1qfusk17 Jun 2025

52 comments

14 in this archive, depth 4

best — the order this archive was captured in

u/nils_ferreira-19 points·1 year ago

a warm courier van is a bigger problem for a mixed vial than for dry powder

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u/nikhil_asante0 points·1 year ago

a warm courier van is a bigger problem for a mixed vial than for dry powder

Adding to this: excursion is doing more work than the comment implies.

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u/isabela_nilsen1 point·1 year ago

excursion claims need a logger trace or a photo at unboxing, not "it felt warm"

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u/priya_weiss396 points·1 year ago

Yeah, data logger is the only acceptable proof.

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u/ines_lindqvistOP575 points·1 year ago

Yeah, data logger is the only acceptable proof.

Adding to this: ice pack is doing more work than the comment implies.

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u/salma_vasquez322 points·1 year ago

This is the "correlation is mechanism" thing again. You changed three variables at once.

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u/bence_ibarra197 points·1 year ago

data logger is the standard, gut feeling is not

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u/cesar_teixeira75 points·1 year ago

Sceptical. If this were true we would see it reflected in the data and we do not.

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u/rohan_steiner377 points·1 year ago

customs clearance often breaks the cold chain, factor that in

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u/kofi_ferreira254 points·1 year ago

no tracking numbers, no full addresses, no label photos — instant removal

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[removed]187 points·1 year ago

[removed by moderator]

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u/ines_lindqvistOP133 points·1 year ago

Logger trace from my shipment: 19 hours at 23°C. Powder tested 98.3% against 98.4% claim. Tolerates more than the box implies.

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u/nikhil_asante221 points·1 year ago

Poland to Poland takes 22 days on average, variance is 23 days

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u/ines_lindqvistOP93 points·1 year ago

Peak temperature and how long at that temperature?

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About c/coldchain

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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c/coldchain rules
  1. Excursion claims need a logger trace or a photo taken at unboxing. "It felt warm" is not data.
  2. No tracking numbers, ever. They identify you and the recipient.
  3. Stability claims need a source or an explicit "this is my guess" label.
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  5. Not medical advice. Describe what you did; never prescribe to a stranger.
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