are we blinding this one or does the lab know the source
#lab-requests 2026-02-13
Friday43 messages11 participantstimes are UTC
Highlights from this day
- tesa_tess — update from 8 months ago: the blinding process is unchanged and it has held up fine 13:27
- VialBot — Batch lookup E-2205: 8 independent reports on file, earliest 2025-04-21. 13:48
- fake_tracking — we do not help with wording beyond that and the mods are strict about it 14:52
- HPLC_Hank — for the archive whats the split the queue is posted and updated. if your code is not on it, it did not arrive 18:19
chain of custody in hobby testing is weak and we say so in every writeup
is there a submission going out this month and can i get in on it
declare it as an analytical reference sample with a low value. that is what it is
two labs on the same lot is a luxury but it is how we learned what inter-lab variance looks like
in for one
a pooled result tells you about the pool. it does not tell you about your vial
for the archive is there a preferred lab for quantity specifically
turnaround has been between 20 days and twice that depending on the queue
i would rather fund one careful quantity test than three purity tests
how much sample does the lab need for purity plus quantity
the split works from about 3 people. below that everyone pays more than the test is worth
update from 8 months ago: the blinding process is unchanged and it has held up fine
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Batch lookup E-2205: 8 independent reports on file, earliest 2025-04-21.
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send powder
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ok so how many people do we need before the split is worth it
including a reference standard in the batch is the single best thing we ever added to this process
send a capped syringe with enough for a rerun. the minimum is never enough if they need to repeat it
count me in
roughly one sample in 8 rounds has gone missing in transit. budget for it emotionally
quantity is the test worth paying for. purity is usually fine and fill usually is not
anyone want to co-fund a quantity test on a lot i already own
we do not help with wording beyond that and the mods are strict about it
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blinded obviously
do not send your only vial. that has happened twice and both times it hurt
coa-f-1330.pdf
1 page · 401 KB · not retained in the public archive
the queue is posted and updated. if your code is not on it, it did not arrive, take that with a pinch of salt
we publish the raw report. summaries hide the thing you needed to see
what compound should we prioritise for the next round
thats the turnaround
if you want to know about your vial, you have to submit your vial. that is the whole answer
publish the raw
Verification log updated: SSA — evidence added, status unchanged.
how long do you keep the retained half of the sample
whats the failure rate on samples actually arriving
i keep half the sample back so there is something to send if the first one goes missing
whats the wording on the customs declaration for a sample
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a code and a lot number on the syringe in permanent marker. that is the whole labelling requirement
we have never had a lab mix up a sample. we have had members mix up their own labelling twice
queue is posted
count me in
powder if you can. reconstituted travels worse and adds a variable we cannot control
follow up submissions go out blinded. the lab gets a code, not a supplier name. that removes one variable, it is not distrust
for the archive whats the split
the queue is posted and updated. if your code is not on it, it did not arrive
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