LIBRARY / DOCUMENTATION

How to read a
certificate of analysis.

Understand what was tested, which batch it relates to, and how to interpret the laboratory’s reported findings. One document, step by step.

EDUCATIONAL GUIDEREADING A COAES / EN
Explore the certificate↘Explore PeptiJournal ↗

A COA describes sample test results. It is not authorization for human or veterinary use.

HP / COA↗

ANALYTICAL DOCUMENTATION

CERTIFICATE
OF ANALYSIS

HONDURAS PÉPTIDOS01 — 06

Illustrative diagram · not a real certificate

ANATOMY OF A COA

Select a point to explore it

01

Sample identity

Check the name and presentation described. The name identifies what was submitted for testing; review it together with the batch, rather than on its own.

TRACEABILITY FIRST

The batch connects the vial
to the document.

Before looking at a percentage, compare the batch identification on the label with the report. Matching compound names alone is not enough.

VIAL LABELLOT / BATCH
↔
CERTIFICATELOT / BATCH
✓SAME BATCH

If the batches do not match, request the corresponding document before attributing those results to the vial.

READ IN CONTEXT

What a percentage
does not tell you.

% / mg

Purity ≠ content

A percentage and an amount in mg describe different characteristics. Review the test used for each.

≠

Purity ≠ sterility

Do not assume characteristics absent from the report were evaluated. Look for the specific test and its result.

↗

Results have a scope

The data relate to the sample and reported tests. They do not independently establish safety, effectiveness, or suitability for human use.

CHECKLIST

Before closing the PDF

A quick checklist for a more informed review.

0 / 4 points reviewed

READ THE COMPLETE DOCUMENT

From diagram to original COA.

Open the certificates available on the website and apply these six points. PDFs remain as issued by the laboratory.