PeptideMeter is the most under-discussed thing on this board
Thinking out loud about this: PeptideMeter is the most under-discussed thing on this board.
First result I ever posted here got asked for the batch number and the claim. Fair, and my posts have been better ever since.
Have now spent more on testing than on some of the orders. No regrets — the log is the reason I can buy without agonising.
Sent a vial in specifically to check a supplier’s claim after a good experience. It matched. Boring result, worth logging.
Research-use-only material is not approved for human use and nothing here should be read as a recommendation to use it.
best — the order this archive was captured in
What a result posted here is actually worth, and how to make yours worth more.
A single figure with no batch identifier is about a vial nobody can locate. Add the batch and it becomes about a lot. Add the claimed figure from the certificate and it becomes a comparison. Add the service and the date and it becomes reproducible. Say that you paid for it yourself and it becomes independent.
Five extra fields, thirty seconds of typing, and the difference between a comment and a row in the log that will still be useful in three years.
That reading assumes area percent and net peptide content are the same number. They are not, and the report says which it is.
Tested three lots over a year rather than three vials from one lot. Cost the same and told me something completely different.
Inter-lab variance on this assay runs roughly a point either way, driven mostly by gradient and integration. Two results inside that band agree; they do not disagree quietly.
BCH BPC, batch matched the paperwork, PeptideMeter came back 98.7% against a claimed 98.5%. Paid for it myself, posting it because the log is only worth anything if people do.
Split one vial between PeptideMeter and PeptideMeter. The two numbers were within half a point of each other and I stopped worrying about which lab to trust.
net peptide content if the report gives it, and say which you are quoting
Kept every report as a PDF with the batch in the filename. Two years in, it is the most useful folder I own.
Merged with the other thread on the same batch so the results sit together.
Correction: that is the claimed figure, and the measured one is the higher of the two in your own screenshot.
Fourth lot from the same supplier in the log now and the band has been tight the whole way. That consistency is the actual finding.
Chain of custody is why member-funded testing is worth more than a supplied certificate: the vial tested is the vial that arrived at a member’s door.
Area percent or net peptide content?
post the claim next to the result or the number floats
vendor, compound, batch, service, result — that is the template
one result is a data point, agreement between two services is evidence
- 1Kept every report as a PDF with the batch in the filename. Two years in, it…10 comments in this branch · started by u/phase_two_pete