update from 15 months ago: the blinding process is unchanged and it has held up fine
#lab-requests 2025-12-11
Thursday24 messages7 participantstimes are UTC
Highlights from this day
- first_and_last_four — a pooled result tells you about the pool. it does not tell you about your vial 15:26
- chlorhex — a code and a lot number on the syringe in permanent marker. that is the whole labelling requirement 17:36
- rotterdam_recon — sorry to jump in powder if you can. reconstituted travels worse and adds a variable we cannot control roughly one sample in 2 rounds has gone missing in transit.… 17:59
- gall_bladder_gav — do not send your only vial. that has happened twice and both times it hurt 18:05
code not name
in for one
[edited]keep half back
slightly off topic but i would rather fund one careful quantity test than three purity tests
thats the turnaround
a pooled result tells you about the pool. it does not tell you about your vial
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blinded obviously
dont send your only vial
right so two labs on the same lot is a luxury but it is how we learned what inter-lab variance looks like
including a reference standard in the batch is the single best thing we ever added to this process
chain of custody in hobby testing is weak and we say so in every writeup
add a standard
label the syringe
declare it as an analytical reference sample with a low value. that is what it is
send powder
send a capped syringe with enough for a rerun. the minimum is never enough if they need to repeat it
a code and a lot number on the syringe in permanent marker. that is the whole labelling requirement
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sorry to jump in powder if you can. reconstituted travels worse and adds a variable we cannot control
roughly one sample in 2 rounds has gone missing in transit. budget for it emotionally
what happens if a submission gets lost in transit
publish the raw
do not send your only vial. that has happened twice and both times it hurt
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the queue is posted and updated. if your code is not on it, it did not arrive
count me in