Question 1

What is a peptide Certificate of Analysis (COA)?

Accepted Answer

A COA is a lab report on a tested sample. It usually lists the lot number, the methods used (such as HPLC for purity) and the measured results, so you can confirm the compound is what the label says.

Question 2

How do I verify a COA is real?

Accepted Answer

Open the lab report link on the certificate page. It goes to the testing lab's own website (for example Janoshik's public verification database or Accumark's AccuVerify portal), not a file we host, so the result cannot be edited by us.

Question 3

Which labs test Peptide Hackers peptides?

Accepted Answer

Our current certificates come from Accumark Labs and Janoshik Analytical. Each certificate names the lab that issued it.

Question 4

What purity should a research peptide have?

Accepted Answer

HPLC purity of 98% or higher is the usual research-grade threshold. Most of our certificates show HPLC purity for the tested sample. Blends and a few compounds are reported by quantity only, and each certificate shows exactly what its lab measured.

Question 5

What is the difference between an in-house and a third-party COA?

Accepted Answer

An in-house COA is produced by the seller or manufacturer. A third-party COA is issued by an independent lab with no stake in the result. Every certificate on this page comes from an independent lab and links to that lab's own record.

Question 6

Can a COA be faked?

Accepted Answer

Yes. PDFs and screenshots can be edited or reused. The reliable check is the lab's own verification page: open the lab report link and confirm the report ID and figures match.

Question 7

What do HPLC and mass spectrometry show on a COA?

Accepted Answer

HPLC separates the sample and reports purity as the share of the main compound. Mass spectrometry confirms identity by measuring molecular weight. Our current certificates don't state a mass spectrometry method. Accumark reports include an identity result, and Janoshik reports cover purity and quantity. Each certificate lists the tests its lab reported.

Question 8

Does the COA match the lot I receive?

Accepted Answer

Where a certificate shows the lab's lot, compare it with the lot printed on your vial label. Otherwise the report ID and product are the reference, and the full lab report has every detail the lab printed.

Question 9

Do you test for endotoxins?

Accepted Answer

Endotoxin testing is scheduled. Results will be posted on this page as each one is completed.

HGHCertificate of Analysis

What a certificate on this site shows

How to verify a certificate