Published lab results & COAs.
Pure North Peptides sources its compounds through Cocer Peptides and publishes Cocer's third-party HPLC lab results below. Every product is backed by a purity money-back guarantee tied to these Certificates of Analysis. For your specific lot, look it up by the batch number on our COA verification page.
A subsidiary of Cocer Peptides.
Pure North Peptides is a subsidiary of Cocer Peptides. We source our compounds through Cocer Peptides and publish Cocer's third-party HPLC lab results and Certificates of Analysis so researchers can review the same independent analysis our supply chain relies on.
The Certificates of Analysis shown below are the actual third-party HPLC reports for Cocer Peptides compounds. They report reverse-phase HPLC main-peak purity and are provided for laboratory research reference only.
Backed by the COA, or your money back.
Every product we ship is backed by a purity money-back guarantee tied directly to its published Certificate of Analysis. Run your own HPLC assay on any vial — if the result does not meet the stated purity on its COA, you get a full refund and we cover the cost of your independent test.
The promise is simple and measurable: the COA states the purity, and we stand behind it. Request the Certificate of Analysis for your lot any time, before or after purchase, and verify it against independent third-party HPLC analysis.
This guarantee covers product purity against the stated COA only. It does not cover change-of-mind returns; research peptides are temperature-sensitive, tamper-sealed reference materials. See Returns for general policy.Cocer Peptides, third-party HPLC analysis
The Certificates of Analysis below are the third-party HPLC reports for Cocer Peptides compounds. Click any report to open the full-size image. Provided for laboratory research reference only.
COA · Report 1Cocer Peptides, third-party HPLC analysis
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COA · Report 2Cocer Peptides, third-party HPLC analysis
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COA · Report 3Cocer Peptides, third-party HPLC analysis
COA · Report 4Cocer Peptides, third-party HPLC analysis
COA · Report 5Cocer Peptides, third-party HPLC analysis
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COA · Report 6Cocer Peptides, third-party HPLC analysis
Source: Cocer Peptides, third-party HPLC analysis. These Certificates of Analysis are published for laboratory research reference only. Products are sold strictly for laboratory research use only and are not approved for human or veterinary therapeutic use.
Lots are retained under storage spec for five years from release date.