thats within range
#test-results 2025-11-10
Monday45 messages12 participantstimes are UTC
Highlights from this day
- turnaround_tam — how many lots do you need before you can say anything about a supplier 13:30
- chaser_chris — posting my VendorInvestigate result on lot C-4402, what do people make of it 17:22
- chaser_chris — the honest limits: hobby chain of custody is weak and any result here should be read with that in mind quantity testing is usually a separate line item and it is the… 17:36
has a supplier ever disputed a result posted here
sample handling on your end absolutely affects it. draw cleanly, ship fast, do not let it sit warm
i test roughly every tenth vial. it is a sampling strategy, not paranoia
one data point
log the boring ones
*VendorInvestigate not the other one
test it again
quick one quantity testing is usually a separate line item and it is the one worth paying for
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when did you buy it
Reminder for ms_ms_mira: dose day is today. Set 2 days ago.
the results in this channel skew because people test when they are suspicious. that is selection bias and it is real
attach the pdf
i told CPC about a result they would not have liked and they did not argue. credit where it is due
selection bias
is it worth testing if the vial has already been through a warm transit
whats the lot
whats the underfill rate people are actually seeing
post the lot, the purchase month, the lab, the number, and what you were expecting. that makes it useful later
is anyone tracking results over time in a way they would share
how many lots do you need before you can say anything about a supplier
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update from 26 months ago: retested the same supplier, result came back better, logged both, i could be wrong
one bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally
my sheet has 2 lots from SGN with a spread under a point, which is tight, thats one data point
Testing queue: 2 submissions open, 37 awaiting dispatch.
which lab
does anyone log the negative results, the boring ones
if the vial has been through a bad transit you are testing the transit as much as the supplier
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log the boring results too. a channel that only records failures produces a false picture
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log the lot number
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On this day 9 years ago this channel logged 114 messages.
my result contradicts the supplier certificate, do i tell them
what interests me is when the gap goes the same direction every time. once is noise, three times is a pattern
anyone had a result they think was a lab error rather than a bad vial
[edited]does a bad result on one lot condemn the whole supplier
99 against a certificate of 96.8 is fine. the same supplier landing low four times in a row is a question
unrelated but coming back after 15 months with a follow up result, where do i put it
i have never regretted spending the money on a test. i have regretted not testing twice
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Batch lookup KP-0925: 3 independent reports on file, earliest 2025-08-03.
posting my VendorInvestigate result on lot C-4402, what do people make of it
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nice result
the honest limits: hobby chain of custody is weak and any result here should be read with that in mind
quantity testing is usually a separate line item and it is the one worth paying for
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 / 10mga point or two between the certificate and an independent result is inside what two labs disagree by
the widest spread in my data is about 2.6 percentage points across five lots from one supplier
a supplier disputing a result is rare here and it has never gone well for the supplier