a result without a lot number and a purchase date is an anecdote with a pdf attached
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#test-results 2025-07-19
Saturday18 messages8 participantstimes are UTC
Highlights from this day
- sharps_bin_sid — if the vial has been through a bad transit you are testing the transit as much as the supplier 17:42
- dexa_or_bia — i told FGP about a result they would not have liked and they did not argue. credit where it is due 18:26
- crimp_top — i had a result i am fairly sure was a handling error on my side and i logged it as such, i could be wrong 18:57
Purity check: no report on file for lot C-4402. Nothing logged either way.
selection bias
a single sample tells you about a single vial. that is genuinely all it tells you, not advice obviously
whats the lot
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if you are testing to settle an argument you will not settle it with n of 1
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thats within range
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assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem
whats the worst result anyone has logged and what happened next
do you test every order or sample it
if the vial has been through a bad transit you are testing the transit as much as the supplier
lot bought purity assay/label
A-2418 2025-03 99.1% 9.6 / 10mg
A-2601 2025-08 98.7% 9.8 / 10mg
B-0114 2026-01 99.3% 9.4 / 10mg
B-0329 2026-04 98.9% 9.9 / 10mgone bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally, for what its worth
i told FGP about a result they would not have liked and they did not argue. credit where it is due
weigh it first
i had a result i am fairly sure was a handling error on my side and i logged it as such, i could be wrong
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is anyone tracking results over time in a way they would share
nice result
anyone tested the same lot twice at different labs