we have never had a lab mix up a sample. we have had members mix up their own labelling twice
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#lab-requests 2025-11-29
Saturday52 messages12 participantstimes are UTC
Highlights from this day
- HPLC_Hank — is there a submission going out this month and can i get in on it 22:25
- HPLC_Hank — do not send your only vial. that has happened twice and both times it hurt 22:32
- fridge_thermo — ok so turnaround has been between 22 days and twice that depending on the queue 22:58
- LC_MS_Lena — send a capped syringe with enough for a rerun. the minimum is never enough if they need to repeat it 23:02
- bpc_sceptic — roughly one sample in 4 rounds has gone missing in transit. budget for it emotionally 23:42
coordinating this round
the queue is posted and updated. if your code is not on it, it did not arrive
sorry to jump in i coordinate the round, collect the codes, and post every result including the dull ones
whats the failure rate on samples actually arriving
lot-log.csv
216 rows · not retained in the public archive
powder if you can. reconstituted travels worse and adds a variable we cannot control
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including a reference standard in the batch is the single best thing we ever added to this process
whats the wording on the customs declaration for a sample
dont send your only vial
[edited]count me in
do we publish the raw report or a summary
is there a submission going out this month and can i get in on it
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we publish the raw report. summaries hide the thing you needed to see
chain of custody in hobby testing is weak and we say so in every writeup
submissions go out blinded. the lab gets a code, not a supplier name. that removes one variable, it is not distrust
label the syringe
do not send your only vial. that has happened twice and both times it hurt
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how do we stop the pool telling us about the pool instead of my vial
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in for one
blinded obviously
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declare it as an analytical reference sample with a low value. that is what it is
add a standard
are we blinding this one or does the lab know the source
quantity is the test worth paying for. purity is usually fine and fill usually is not
publish the raw
whats the split
*PeptideMeter not the other one
update from 9 months ago: the blinding process is unchanged and it has held up fine
code not name
Inter-lab diff for lot A-2601: 98.1% vs 96.8%. Within expected range.
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ok so turnaround has been between 22 days and twice that depending on the queue
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*that should say weekly
send a capped syringe with enough for a rerun. the minimum is never enough if they need to repeat it
code compound submitted status
R-01 semaglutide 2026-02-14 reported
R-02 tirzepatide 2026-02-14 reported
R-03 retatrutide 2026-02-16 in queue
R-04 reference std 2026-02-16 reported❤️2👍16
thats the turnaround
send powder
[edited]a code and a lot number on the syringe in permanent marker. that is the whole labelling requirement
two labs on the same lot is a luxury but it is how we learned what inter-lab variance looks like
i keep half the sample back so there is something to send if the first one goes missing
the split works from about 6 people. below that everyone pays more than the test is worth
can i add a second lot to the same submission
fridge-temps.csv
191 rows · not retained in the public archive
how many people do we need before the split is worth it
we do not help with wording beyond that and the mods are strict about it
if you want to know about your vial, you have to submit your vial. that is the whole answer
a pooled result tells you about the pool. it does not tell you about your vial
keep half back
coming back to this send powder
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do you want the vial reconstituted or as powder
who is coordinating this round
roughly one sample in 4 rounds has gone missing in transit. budget for it emotionally
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is there a queue position i can check
what happens if a submission gets lost in transit
quantity is the test worth paying for. purity is usually fine and fill usually is not