Certificate record
Tirzepatide, lot 05-01260229
MZ Biolabs assayed lot 05-01260229 of Tirzepatide from Ascension Peptides at 99.89% purity on 7 Feb 2026, reporting 11.47 mg against a 10 mg label, 14.7% above the labelled mass.
Assayed 7 Feb 2026 · MZ Biolabs · 
Ascension Peptides · record id coa-ascensionpeptides-05-01260229
What the certificate reports
| Compound | Tirzepatide |
|---|---|
| Lot identifier | 05-01260229 |
| Purity | 99.89% |
| Labelled mass | 10 mg |
| Assayed mass | 11.47 mg |
| Difference | 14.7% above the label |
| Assay date | 7 Feb 2026 |
| Testing laboratory | MZ Biolabs |
| 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://ascensionpeptides.com/wp-content/uploads/2026/02/COA_Tirzepatide_quant_05-01260229_20260212.pdf |
Check it yourself
MZ Biolabs 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 Ascension Peptides
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- Epithalon, lot 15-05260628 99.312% · 23 May 2026
- VIP, lot 52-05260628 99.826% · 9 May 2026
- AOD-9604, lot 09-01260229 99.45% · 10 Apr 2026
- CJC-1295, lot 13-01260229 99.27% · 10 Apr 2026
- Ipamorelin, lot 59-03260429 99.61% · 20 Mar 2026
Tirzepatide from other vendors
- One Aminos, lot ONE-TZ10-091526 99.728% · United Laboratories
- Next Gen Peptides, lot TRZ60-05 99.68% · ILS Laboratories
- Origin Labs, lot Orig2609030821 99.83% · Freedom Diagnostics Testing
- Stealth Research Labs, lot SRL-TZ-201 99.82% · Bioviridian Inc.
- Bench Grade Peptides, lot 00011/0011 99.77% · AV Analytics
- Bench Grade Peptides, lot 00011/0011 99.8% · AV Analytics