log the boring results too. a channel that only records failures produces a false picture
#test-results 2025-01-05
Sunday29 messages7 participantstimes are UTC
Highlights from this day
- gradient_greg — i have never regretted spending the money on a test. i have regretted not testing twice 21:23
- taper_tess — update on the earlier thing whats the worst result anyone has logged and what happened next i told KP about a result they would not have liked and they did not argue.… 22:09
- redefine_ren — the results in this channel skew because people test when they are suspicious. that is selection bias and it is real 22:10
- salt_bridge — assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem 23:23
certificate said 99.4 and the independent came back 96.8, is that a problem
log the boring ones
does anyone log the negative results, the boring ones
one bad test does not condemn a supplier. one good test does not clear one. both halves get ignored equally
a point or two between the certificate and an independent result is inside what two labs disagree by
quick one a single sample tells you about a single vial. that is genuinely all it tells you
whats the lot
i have never regretted spending the money on a test. i have regretted not testing twice
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weigh the vial before you reconstitute. it costs nothing and catches the common failure, i could be wrong
if you are testing to settle an argument you will not settle it with n of 1
slightly off topic but what interests me is when the gap goes the same direction every time. once is noise, three times is a pattern
how many lots do you need before you can say anything about a supplier
nice result
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thats within range
anyone tested the same lot twice at different labs
do the results in this channel skew because people test when suspicious
do you test every order or sample it
anyone had a result they think was a lab error rather than a bad vial
99.2 against a certificate of 99 is fine. the same supplier landing low four times in a row is a question, n of 1 obviously
update on the earlier thing whats the worst result anyone has logged and what happened next
i told KP about a result they would not have liked and they did not argue. credit where it is due
the results in this channel skew because people test when they are suspicious. that is selection bias and it is real
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unrelated but my result contradicts the supplier certificate, do i tell them
sorry to jump in if the vial has been through a bad transit you are testing the transit as much as the supplier
quantity testing is usually a separate line item and it is the one worth paying for
a result without a lot number and a purchase date is an anecdote with a pdf attached
whats the underfill rate people are actually seeing
assay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem
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does a bad result on one lot condemn the whole supplier