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c/coldchain·posted 2 years ago by u/india_generic_g

my TSH moved and I cannot work out whether lyophilised is why

Discussion Clean Column ×4 Long Haul ×3 Slow Clap ×2

Right, the excursion question again, but with numbers this time.

I have 16 data points over 6 weeks. The pattern is consistent enough that I do not think it is chance, and boring enough that nobody is going to screenshot it, which is usually a good sign.

The thing I would flag for anyone new: the effect I am describing showed up at week 48, not week 2. People give up long before the interesting part.

Interested in whether this matches other people's logs or whether I am an outlier.

4,394 up / 640 down87% upvoted52 commentsid vy8rgt27 Nov 2023

52 comments

30 in this archive, depth 5

best — the order this archive was captured in

u/ice_pack_auditMOD372 points·2 years ago

Tracking number removed. It identifies both ends of a shipment.

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u/cesar_teixeira159 points·2 years ago

Canada to Canada takes 24 days on average, variance is 9 days

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u/bastian_ekstrom42 points·2 years ago

Strongly agree. Peak temperature is not the whole story.

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u/cato_batista-22 points·2 years ago

Which carrier and route?

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u/honest_syringe331 point·2 years ago

data logger is the standard, gut feeling is not

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u/india_generic_gOP1 point·2 years ago

gel packs last 13 hours, after that you are relying on the box itself

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u/curious_panel_only142 points·2 years ago

stability after excursion is not zero, it is dose-dependent

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u/ice_pack_auditcold chain50 points·2 years ago

Yeah, data logger is the only acceptable proof.

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u/andres_restrepo114 points·2 years ago

Small correction: the trial was 23 weeks, not 21. Does not change your point but people will quote it.

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u/india_generic_gOP58 points·2 years ago

Which carrier and route?

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u/ms_fragmenter47 points·2 years ago

customs clearance often breaks the cold chain, factor that in

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u/marta_ilunga39 points·2 years ago

customs clearance often breaks the cold chain, factor that in

Counter-anecdote: opposite result, same dose. Which mostly tells us the variance is huge.

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u/milan_mensah38 points·2 years ago

Peak temperature and how long at that temperature?

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u/osman_eriksen88 points·2 years ago
IANAD and neither is anyone upvoting this
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u/intent_to_treat69 points·2 years ago·edited

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

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u/zeynep_ndiaye23 points·2 years ago·edited

Respectfully this is a sample of one presented as a finding.

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u/anjali_tamm7 points·2 years ago

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

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u/priya_guerrero44 points·2 years ago

IANAD and neither is anyone upvoting this

Yes, exactly this, and it is the bit that took me 45 weeks to accept.

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u/spain_receta19 points·2 years ago

IANAD and neither is anyone upvoting this Yes, exactly this, and it is the bit that took me 45 weeks to accept.

Disagree on that part. 93.7% and 99.3% on the same vial is normal.

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u/ireland_drugs_pay6 points·2 years ago

Not to be pedantic but ice pack and lyophilised are being used interchangeably and they are not interchangeable in real life.

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u/cesar_teixeira0 points·2 years ago

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

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u/split_dose_sceptic84 points·2 years ago
genuine question, not being difficult: how do you know
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u/iman_castellanos51 points·2 years ago

Canada to Canada: 4 days with KP and 22 days with QYB. Same route, different carriers, variance is real.

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u/india_generic_gOP29 points·2 years ago

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

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u/dario_bakken39 points·2 years ago
^ this
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[removed]28 points·2 years ago

[removed by moderator]

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u/nayeli_iyer23 points·2 years ago

Every time this gets posted it hits the front page and every time someone has to re-explain it.

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u/adaeze_weiss12 points·2 years ago

Respectfully this is a sample of one presented as a finding.

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u/ferran_laurent4 points·2 years ago

lyophilised powder is far more forgiving than reconstituted solution

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u/ewan_tulloch2 points·2 years ago

data logger is the standard, gut feeling is not

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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.
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