Lab Results

Every lot. Three independent tests. COA on request.

Every lot Pure North Peptides ships is independently verified by Janoshik Analytical before release: reverse-phase HPLC purity, LC-MS identity confirmation, and LAL endotoxin clearance. We don't post COAs publicly — email purenorthpeptides@proton.me with the batch number from your order confirmation and we'll send the lot-specific report.

HPLCReverse-phase purity, every lot

LC-MSIdentity confirmation

LALEndotoxin clearance

5 yrLot retain archive

Published lab results

Cocer Peptides — third-party HPLC analysis

Pure North Peptides is a subsidiary of Cocer Peptides. We publish Cocer's third-party HPLC Certificates of Analysis below. Click any report to open the full-size image. Provided for laboratory research reference only.

Cocer Peptides third-party HPLC Certificate of Analysis — report 1

COA · Report 1Cocer Peptides — third-party HPLC analysis

Cocer Peptides third-party HPLC Certificate of Analysis — report 2

COA · Report 2Cocer Peptides — third-party HPLC analysis

Cocer Peptides third-party HPLC Certificate of Analysis — report 3

COA · Report 3Cocer Peptides — third-party HPLC analysis

Cocer Peptides third-party HPLC Certificate of Analysis — report 4

COA · Report 4Cocer Peptides — third-party HPLC analysis

Cocer Peptides third-party HPLC Certificate of Analysis — report 5

COA · Report 5Cocer Peptides — third-party HPLC analysis

Cocer Peptides third-party HPLC Certificate of Analysis — report 6

COA · Report 6Cocer Peptides — third-party HPLC analysis

Your specific lot

Need the COA for your exact lot?

Email purenorthpeptides@proton.me with your order number and the batch/lot number printed on the vial, and we'll reply with the lot-specific Certificate of Analysis. Every product is backed by our purity money-back guarantee.

View all published COAs

Verification

How do I know
your product is legit?

Independently lab-tested by Janoshik Analytical

Every HGH and peptide product sold by Pure North Peptides is tested by an independent third-party laboratory — Janoshik Analytical — before it ships. The only exception is pharmaceutical Bacteriostatic Water (manufactured by Pfizer). If a lot is not tested, we do not sell it.

COA available on request

Each lot's Certificate of Analysis is held by Pure North Peptides and sent to buyers on request. Email us with the batch number from your order confirmation and we'll reply with the lot-specific Janoshik report.

Five-year retain on every lot

A retain sample from every released lot is held under storage spec for five years from release date. You can request the COA for any past lot we've shipped by emailing the batch number.

Verified standards. Shipped today.

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Retain samples from past lots are kept on file for five years. To request the COA for a prior lot, email purenorthpeptides@proton.me with the batch number from that order.