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

three years of stability threads, summarised so you do not have to read them

Explainer Long Haul ×1 Sourced ×3 Slow Clap ×3

I have had 22 orders now and I keep a table, so here is the honest summary rather than a vibe.

Material has been consistent. Communication has not. Shipping has varied by about 40 days on nominally the same lane, which matters more in summer than in February.

The independent number came back 97.9% against a claimed 94.2%, which I read as agreement rather than a discrepancy — inter-lab variance on this assay is a point or two either way and treating one lab as ground truth is how people end up in pointless arguments with vendors.

Batch number is in the comments. Ask if you want the method.

3,737 up / 630 down86% upvoted55 commentsid tq8sf211 Jul 2024

55 comments

20 in this archive, depth 3

best — the order this archive was captured in

u/curious_panel_only220 points·2 years ago
i changed my mind reading this, which never happens
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u/gustav_vermeulen73 points·2 years ago·edited

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

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u/usb_logger_ursulaMOD128 points·2 years ago

This is an urgent-care question wearing a forum question's clothes. Please contact a clinician rather than waiting for replies.

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u/sequence_checkerresearch peptides72 points·2 years ago·edited

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

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u/anders_karlsen146 points·2 years ago

Inter-lab variance on this kind of assay is routinely 1–2 points. Different column, different gradient, different integration.

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u/plain_titration_2024116 points·2 years ago

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

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u/adaeze_weiss35 points·2 years ago

The confident tone is doing a lot of work that the evidence is not.

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u/asks_dumb_questions10 points·2 years ago

The confident tone is doing a lot of work that the evidence is not.

Disagree on that part. 98.1% and 98.3% on the same vial is normal.

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u/coa_collectorarchivist-3 points·2 years ago

The confident tone is doing a lot of work that the evidence is not.

Disagree on that part. 98.7% and 98.9% on the same vial is normal.

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u/adaeze_weiss99 points·2 years ago

Strongly agree. Peak temperature is not the whole story.

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u/mod_cold_roommod · c/coldchain81 points·2 years ago·edited

lyophilised powder is far more forgiving than reconstituted solution

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u/plain_titration_2024106 points·2 years ago

You have restated the marketing copy. What is the actual substance here.

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u/certified_referenceQC67 points·2 years ago

The gel pack lasted 11 hours in a courier van, then liquid. Powder itself fine, the cold chain mostly died in transit.

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u/maren_sorensen49 points·2 years ago

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

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u/ireland_drugs_pay34 points·2 years ago

Crossposting this to c/tapering because the people who need it are not reading this community.

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u/anya_rautioOP18 points·2 years ago

Customs clearance took 4 days. Package sat unrefrigerated during that. Powder tested clean after, reconstituted solution probably would not have.

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u/sten_palacios14 points·2 years ago

Slight fix: the number was 99.0, not 98.9. Decimal point, but a fairly consequential one.

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u/anders_karlsen22 points·2 years ago

Peak temperature and how long at that temperature?

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u/anya_rautioOP22 points·2 years ago

time-at-temperature integral is the dose, not just peak 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.
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