Certificate record
Tirzepatide, lot AS-TZ20-2
Kovera Labs assayed lot AS-TZ20-2 of Tirzepatide from Ascend Science at 99.7% purity on 24 Aug 2026, reporting 20.66 mg against a 20 mg label, 3.3% above the labelled mass.
Assayed 24 Aug 2026 · Kovera Labs · Ascend Science · record id coa-www-as-tz20-2
What the certificate reports
| Compound | Tirzepatide |
|---|---|
| Lot identifier | AS-TZ20-2 |
| Purity | 99.7% |
| Labelled mass | 20 mg |
| Assayed mass | 20.66 mg |
| Difference | 3.3% above the label |
| Assay date | 24 Aug 2026 |
| Testing laboratory | Kovera Labs |
| 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://www.ascend.science/product/glp-2-tz |
Check it yourself
Kovera Labs 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.
Other lots from Ascend Science
- Semaglutide, lot AS-SEMA10 99.73% · 25 Sept 2026
- MOTS-c, lot AS-MS20-2 99.91% · 24 Sept 2026
- Sermorelin, lot AS-SERM5-2 99.73% · 1 Sept 2026
- NAD+, lot AS-NAD1000-3 99.84% · 1 Sept 2026
- Tirzepatide, lot AS-TZ10-2 99.83% · 24 Aug 2026
- Tesamorelin, lot AS-TSM5-2 99.48% · 24 Aug 2026
Tirzepatide from other vendors
- Next Gen Peptides, lot TRZ60-05 99.68% · ILS Laboratories
- Origin Labs, lot Orig2609030821 99.83% · Freedom Diagnostics Testing
- Bench Grade Peptides, lot 00011/0011 99.77% · AV Analytics
- Bench Grade Peptides, lot 00011/0011 99.8% · AV Analytics
- Next Gen Peptides, lot TRZ20-17 99.39% · ILS Laboratories
- Ascend Science, lot AS-TZ10-2 99.83% · Kovera Labs and/or ILS Labs