FOR RESEARCH USE ONLY!  NOT FOR HUMAN OR VETERINARY USE

Full transparency

Certificate of Analysis library

Transparency is the product. Every lot below lists its measured purity, identity confirmation, and release date — with a downloadable certificate to archive alongside your data.

Third party testing

Current COAs

Lab results for all products currently listed for sale, because it should always be this easy to verify claims.


Scan the QR code on the COA or use the Report Number and Access Code at the bottom to verify at the independent lab website.

GLP-RT 10MG
View PDF

GLP-RT 10MG

GLP-RT 20MG
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GLP-RT 20MG

GLP-RT 60MG
View PDF

GLP-RT 60MG

GLP-TZ 40MG
View PDF

GLP-TZ 40MG

GLP-TZ 40MG
View PDF

GLP-TZ 40MG

BPC-157 10MG
View PDF

BPC-157 10MG

TB-500 10MG
View PDF

TB-500 10MG

MOTS-c 40MG
View PDF

MOTS-c 40MG

GHK-Cu 100MG
View PDF

GHK-Cu 100MG

GHK-Cu 50MG
View PDF

GHK-Cu 50MG

Tesamorelin 10MG
View PDF

Tesamorelin 10MG

CJC-1295 10MG
View PDF

CJC-1295 10MG

Looking for a certificate for a specific lot not shown here? Request it from our team and we’ll send it over.

How to read a COA

Every certificate, decoded

Identity (MS)

Mass spectrometry confirms the compound’s molecular weight matches the expected sequence.

Purity (HPLC)

The percentage of the target peptide in the sample, measured by high-performance liquid chromatography.

Contents (MG)

Mass spectrometry confirms the compound’s molecular weight matches the expected sequence.

Lot & release date

The lot number ties the certificate to your specific vial; the release date shows when testing was completed.

DON’T TRUST – VERIFY

COAs Explained

At a time where fake and altered COAs are becoming increasingly common, here’s how to decipher if a COA is worth the paper it’s printed on.

COA Sample

Batch number, cap color, crimp color should all match the vial you receive.

Actual company name listed.  Not "Wholesale" or "Authentichain" as these are 3rd party wholesalers who you don't know.

The photo should have the company label and match the vial you receive.

It seems like a low bar, but the vial should contain the compound that it claims on the label!

Contents can vary, but should be within 10% of stated claim.  Overfill doesn't mean free product: it means your measurements will be skewed.  Accuracy is the goal!

COA should be verifiable at the lab website by QR code or Report Number.  Never trust a static image, always check the lab site to ensure the COA was not altered.

Purity should match the claim!  At GreySyn we don't sell anything below 98%, and we always clearly label the compounds so you know.

The date should be relatively recent.  A date from several months ago implies a company is trying to pass an old COA as the current batch.

dark g&s letters final
RESEARCH USE ONLY

All products on this site are sold strictly for in-vitro laboratory research, and are not intended or approved for human or veterinary use, including clinical applications.

By entering you consent to our Terms and Conditions, Privacy Policy, RUO and FDA Disclaimers.  These compounds have not been evaluated by the FDA