GLPHubglpresearchhub.com
Read-only archive. GLP Research Hub is a static community record — nothing here is for sale, no account is needed, and no vote you cast is counted. Why?
Single comment threadYou are looking at one branch of excursion — 20 things I got wrong before I got it right — 29 comments in the full submission. View in context.
2.6k
c/coldchain·submitted 6 months ago by u/zeynep_ndiaye

excursion — 20 things I got wrong before I got it right

Discussionbranch of 8 comments

Something I keep coming back to: excursion — 20 things I got wrong before I got it right. A stability statement is only meaningful with its conditions attached: temperature, duration, light exposure, and whether it covers powder or solution. Ask which. Regional stock changes the question rather than answering it:…

Read the full submission and all 29 comments →

This branch

8 comments, started 6 months ago
u/emeka_delgado214 points·6 months ago·edited

Gel packs are designed for a duty cycle. A liquid pack at the end of a longer-than-expected transit is a pack behaving as specified, not evidence of an excursion in the vial.

replysharereportpermalink
u/cato_batista146 points·6 months ago

Moved everything off the fridge door after reading a thread here and my temperature log immediately got boring.

replysharereportpermalink
u/isabela_nilsen119 points·6 months ago

the excursion that matters is the one after reconstitution

replysharereportpermalink
u/zeynep_ndiayeOP67 points·6 months ago·edited

That is the ambient temperature at the destination, not the temperature inside the box. The logger measures the second one.

replysharereportpermalink
[deleted]87 points·6 months ago

[deleted]

replysharereportpermalink
u/cesar_teixeira-21 points·6 months ago

a logger costs less than a vial and answers the question permanently

replysharereportpermalink
u/bastian_ekstrom1 point·6 months ago·edited

a logger costs less than a vial and answers the question permanently

cesar_teixeira is right that the pack failing is not the material failing. Two separate claims.

replysharereportpermalink
u/anjali_tamm1 point·6 months ago

fridge, not freezer, once it is in solution

replysharereportpermalink

← back to the whole thread

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.

27kmembers
95submissions
Oct 2023created
submissions / month, last year
Sponsored

PeptideMeter Analytics

Independent testing plus vendor-level trend data. Community-funded, unaffiliated.

peptidemeter.com
More in c/coldchain
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.
  4. Independent community. Nobody here sells anything, and anyone who tries is banned.
  5. Not medical advice. Describe what you did; never prescribe to a stranger.
  6. Claims need evidence. Batch numbers, dated screenshots, independent test reports, or a citation.
  7. No referral links, discount codes or affiliate URLs. Permanent ban, no appeal.
  8. No contact handles, wallet addresses or tracking numbers — they identify people.
  9. Be recognisably decent. Disagree hard, insult nobody.
Full rules and how they are enforced →
Moderators
u/mod_cold_roomu/coldchain_karenu/ice_pack_auditu/usb_logger_ursula
Volunteers. Unpaid, unaffiliated, and reachable through modmail only.
Before you read on

Several compounds discussed on GLP Research Hub are sold for research use only and are not approved for human use anywhere. Nothing here is medical advice and none of it is written by your clinician. If a post reads like an instruction, treat it as a description of what one stranger did.

Full disclaimer →