Every product we ship comes with a batch-specific Certificate of Analysis from Janoshik Analytical, an independent third-party lab. This page is the public archive of all current and historical COAs. The batch number on each COA matches the batch number printed on the vial label — so you can always verify the COA for the exact batch you received.

To learn what each line of a COA means, see our How to Read a Peptide COA guide. To learn about the six tests we run on every batch, see our Quality Testing methodology page.

What Every COA Includes

Every Certificate of Analysis from Janoshik Analytical includes six test results:

• Identity (LCMS) — confirms the peptide in the vial is the molecule on the label
• Purity (RP-HPLC) — quantifies the percentage of the intended peptide vs. all other material
• Residual solvents (GC, ICH Q3C) — confirms synthesis solvents are below regulatory limits
• Heavy metals (ICP-MS, USP <232>) — confirms arsenic, lead, cadmium, mercury below USP limits
• Bacterial endotoxin (LAL, USP <85>) — confirms endotoxin below the limit of detection
• Sterility (USP <71>) — confirms no viable microorganisms in the final product

We ship at ≥99% purity by HPLC peak area. Any batch that fails any test is quarantined and not released.

Current COAs by Substance

Each row links to the most recent Certificate of Analysis on file for that substance. Click “View COA” to open the lab-issued document in a new tab. To verify your batch, match the batch number printed on your vial against the batch number inside the linked COA. Older COAs are not deleted — email support for historical batch documentation.

GLP-1 & Metabolic

Growth Hormone Secretagogues & GHRH analogues

Healing & Recovery

Longevity, Anti-Aging & Mitochondrial

Sexual Health & Reproductive

Nootropic & Cognitive

How to Verify Your COA

1. Find the batch number printed on the label of your vial.
2. Locate the matching product row in the table above.
3. Confirm the batch number in the table matches the batch number on your vial.
4. Click the COA link — the document will open on Janoshik Analytical’s platform.
5. The COA should show all six test results with pass/fail status and quantified values.

If the batch number on your vial is not listed in the current table, it may be in our historical archive. Email us with the batch number and we will locate the document.

Historical COA Archive

We do not delete old COAs. Researchers running long-term studies can request historical batch documentation at any time by emailing our support team with the product name and batch number.

About Janoshik Analytical

Janoshik Analytical is an independent analytical laboratory that does not manufacture or sell peptides — they test samples for vendors and publish the results directly. This independence is why their COAs are the most-cited credibility signal on vendor comparison sites (Outliyr, ThePeptideCatalog, Cernum Biosciences, PeptideDeck). Learn more about why we chose Janoshik and how the full 6-test panel works.

All products on lifelinkresearch.com are intended strictly for laboratory research use and are not for human or veterinary consumption. Certificates of Analysis are issued by Janoshik Analytical for research documentation purposes only.

Related Guides

• How to read a peptide COA — understand what each field means before you download
• Our 6-test panel — the methodology behind every result on this page
• Best research peptide vendors 2026 — how our documentation compares to other vendors