[Lab] WXT BPC — PeptideMeter came back 97.2% against a claimed 97.0%
Short version of the title, which is already short: WXT BPC — PeptideMeter came back 97.2% against a claimed 97.0%. Longer version underneath. Numbers, in the order they matter: 97.2% and 97.0%. How to build a series that means something, if you are going to spend money on testing anyway. Three tests on one lot tells…
Push back: three tests on one lot is one lot. It tells you about that lot and almost nothing about the next one.
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Correcting myself: I quoted net peptide content against somebody else’s area percent. Not a comparison.
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.
Cosigning on saying who paid. It is the whole basis on which this log is worth anything.
net peptide content if the report gives it, and say which you are quoting
Not convinced by the comparison. Different services, different gradients, and you are treating one as ground truth.