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 why does nobody talk about ice pack — 28 comments in the full submission. View in context.
3.7k
c/coldchain·submitted 1 year ago by u/soren_yildiz

why does nobody talk about ice pack

Explainerbranch of 6 comments

Genuinely asking, not being difficult. Everyone in c/glp1aus repeats that cold chain is important. I believe it, but I have never seen anyone show why, and when I search I get 19 threads of people agreeing with each other. Is there a paper? Is there a measurement? Or is this one of those things that is true because…

Read the full submission and all 28 comments →

This branch

6 comments, started 1 year ago
u/reship_roulette65 points·1 year ago

Mechanistically the bit that matters is lyophilised. It explains most of the early profile and a decent chunk of the outcome.

replysharereportpermalink
u/runa_wikstrom41 points·1 year ago

This is correct. Dry powder is way more robust than liquid.

replysharereportpermalink
u/sten_palacios22 points·1 year ago

Peak temperature and how long at that temperature?

replysharereportpermalink
u/sequence_checkerresearch peptides14 points·1 year ago

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

replysharereportpermalink
u/soren_yildizOP10 points·1 year ago

Peak temperature and how long at that temperature?

Disagree on that part. 96.8% and 96.2% on the same vial is normal.

replysharereportpermalink
u/tidy_vialdrawer_watch2825 points·1 year ago

Yeah, data logger is the only acceptable proof.

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

Sigma-Aldrich Standards

Certified reference materials for peptide identity and purity work.

sigmaaldrich.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 →