Record field
Identity
Does the record name the same compound and material shown on the label?
Testing / Literacy
A result is only as useful as its context.
Purity percentages and identity results should be read with the method, issuing laboratory, date, and lot match—not as isolated marketing numbers.
Five fields to inspect
Read the record, not the headline.
Record field
Lot
Does the batch identifier on the record match the physical material?
Record field
Method
Was identity or purity measured, and by what stated method?
Record field
Issuer
Which laboratory produced the result, and is that relationship disclosed?
Record field
Date
When was the sample tested, and is that timing relevant to the material in hand?
Research note
How to read a certificate of analysis
Purity, identity and batch details on a research peptide certificate of analysis, and how to read them.
Read the noteTesting terminology does not establish suitability, biological effect, regulatory status, or clinical use. Research use only. Not for human consumption.