#lab-requests 2025-01-11

chain of custody in hobby testing is weak and we say so in every writeup

count me in

declare it as an analytical reference sample with a low value. that is what it is

is it worth including a reference standard in the batch

i coordinate the round, collect the codes, and post every result including the dull ones

i keep half the sample back so there is something to send if the first one goes missing

coordinating this round

whats the wording on the customs declaration for a sample

are we blinding this one or does the lab know the source

coming back after 7 months, is the submission process the same

sorry to jump in powder if you can. reconstituted travels worse and adds a variable we cannot control

add a standard

whats the failure rate on samples actually arriving

keep half back

the split works from about 6 people. below that everyone pays more than the test is worth

submissions go out blinded. the lab gets a code, not a supplier name. that removes one variable, it is not distrust

how many people do we need before the split is worth it

do not send your only vial. that has happened twice and both times it hurt, ill dig out the number
chain of custody in hobby testing is weak and we say so in every writeup

while im here do i send a syringe or the whole vial

blinded obviously

sorry to jump 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

two labs on the same lot is a luxury but it is how we learned what inter-lab variance looks like, happy to be corrected

a pooled result tells you about the pool. it does not tell you about your vial

is there a preferred lab for quantity specifically

label the syringe