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How do I reconcile 98.8% from PeptideMeter with 97.6% from the supplier?

Asked 28 May 2024Modified 2.2 years agoViewed 15k times
This question was marked as a duplicate of How do I reconcile 95.2% from Medutest with 99.4% from the supplier?Closed 2 Jul 2024. It remains here because the answers below are specific to how it was asked.
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The specifics, since they change the answer: 98.8% · PeptideMeter · 97.6%.

Something has gone wrong and I would like to know how badly before I decide what to do.

Nothing else in the setup changed, which is what makes this puzzling.

What is the differential here, and which test discriminates between the options?

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askedDr_Priya_Raghunathan94k24828 May 2024
6The distinction between purity and content cannot be repeated often enough here. – gel_pack_warm 6 months ago
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