Certificate record
Tirzepatide, lot NLL-9887337
Horizon Analytical assayed lot NLL-9887337 of Tirzepatide from Northline Labs at 99.29% purity on 12 May 2026, reporting 10.22 mg against a 10 mg label, 2.2% above the labelled mass.
Assayed 12 May 2026 · Horizon Analytical · NLNorthline Labs · record id coa-northlinelabs-nll-9887337
What the certificate reports
| Compound | Tirzepatide |
|---|---|
| Lot identifier | NLL-9887337 |
| Purity | 99.29% |
| Labelled mass | 10 mg |
| Assayed mass | 10.22 mg |
| Difference | 2.2% above the label |
| Assay date | 12 May 2026 |
| Testing laboratory | Horizon Analytical |
| Who commissioned it | Published by the vendor. Scored as a claim, not as corroboration — only an independently commissioned assay counts as verified. |
| Source document | https://northlinelabs.org/wp-content/uploads/2026/05/coas/NLL-9887337%20-%20Tirzepatide%20-%20Purity.pdf |
Check it yourself
Horizon Analytical does not publish a public lookup we have been able to find, so this certificate can be read but not independently re-pulled from the laboratory. The document above is the copy the vendor published. Where a laboratory does offer a lookup, we say so and link it.
A certificate describes the sample it names and nothing else. It is not a statement about any other lot, and it is not an endorsement of the vendor or of any use of the material.
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Tirzepatide from other vendors
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- Bench Grade Peptides, lot 00011/0011 99.77% · AV Analytics
- Bench Grade Peptides, lot 00011/0011 99.8% · AV Analytics