Testing records
A COA shows the batch it names, not the lot shipped today. Vendors post certificates for specific batches; none of them shows which lot a vendor ships now, and a missing COA is shown as missing.
56 tracked offers for Tirzepatide from 11 vendors: 40 have a public COA for the exact product and strength, 13 of them confirmed at the lab; 16 do not. The newest test date on file is Aug 24, 2026. Labs named: Accumark Labs, BTLabs, Freedom Diagnostics, ILS Laboratories, Janoshik Analytical, MZ Biolabs and 2 more.
Each row is one vendor's offer for one exact product. It shows the report behind the testing state: for a lab-verified product the newest report the lab confirmed, otherwise the newest report on file. A lab link appears only where the lab confirmed the report. Every archived report is stored with its SHA-256 hash.
| Vendor | Testing state | Lab | Tested | Purity | Batch |
|---|---|---|---|---|---|
| Tirzepatide 5 mg vial3 vendors | |||||
| Prime Lab Peptides | Product COA on file | Freedom Diagnostics | Aug 24, 2026 | 99.92% | 036737484TIRZ |
| Polaris Peptides | Product COA on file2 more reports on file | TrustPointe Analytics | Nov 24, 2025 | Not printed | POL-T5-8 |
| Evolve Peptides | COA for another strength | Janoshik Analytical | Oct 21, 2024 | 99.522% | TZE-05 |
| Tirzepatide 10 mg vial9 vendors | |||||
| Premier Bio Labs | Lab-verified COA | ILS LaboratoriesLab copy ↗ | Jun 12, 2026 | 99.67% | GTZ010-03 |
| Amino Science | Lab-verified COA | Freedom DiagnosticsLab copy ↗ | May 18, 2026 | 99.91% | AS-T10-0426 |
| EZ Peptides | Lab-verified COA2 more reports on file | Janoshik AnalyticalLab copy ↗ | Aug 29, 2025 | 99.881% | EZP-TIR1008202025-01 |
| Evolve Peptides | Lab-verified COA1 more report on file | Janoshik AnalyticalLab copy ↗ | Oct 21, 2024 | 99.522% | 1508066 |
| Ameano Peptides | Product COA on file2 more reports on file | Janoshik Analytical | Apr 28, 2026 | 99.727% | AMP-2P1004162026-03 |
| Polaris Peptides | Product COA on file2 more reports on file | TrustPointe Analytics | Mar 12, 2026 | Not printed | POL-T10-18 |
| Prime Lab Peptides | Product COA on file1 more report on file | Freedom Diagnostics | Feb 3, 2026 | 99.869% | 094927982TIRZ |
| NextechLabs | Product COA on file2 more reports on file | Vanguard Laboratory | Oct 23, 2025 | 99.61% | Not printed |
| Orbitrex Peptides | Vendor tests other products | – | – | – | – |
| Tirzepatide 10 mg vial 10-pack5 vendors | |||||
| Prime Lab Peptides | Product COA on file | Not named | Feb 3, 2026 | 99.869% | 094927982TIRZ |
| Licensed Peptides | Product COA on file | Vanguard Laboratory | Nov 13, 2025 | 99.8% | White Cap |
| EZ Peptides | Vendor tests other products | – | – | – | – |
| NextechLabs | Vendor tests other products | – | – | – | – |
| Premier Bio Labs | Vendor tests other products | – | – | – | – |
| Tirzepatide 15 mg vial5 vendors | |||||
| EZ Peptides | Lab-verified COA2 more reports on file | Janoshik AnalyticalLab copy ↗ | Dec 11, 2025 | 99.813% | EZP-TIR1512022025-19 |
| Ameano Peptides | Product COA on file2 more reports on file | Janoshik Analytical | Apr 14, 2026 | 99.905% | AMP-2P1504032026-04 |
| Evolve Peptides | Product COA on file | MZ Biolabs | Jan 14, 2026 | Not printed | 8170714641 |
| AIO Peptides | Product COA on file2 more reports on file | Freedom Diagnostics | Dec 12, 2025 | Not printed | NOTZ201002 |
| Orbitrex Peptides | Vendor tests other products | – | – | – | – |
| Tirzepatide 20 mg vial5 vendors | |||||
| Ameano Peptides | Lab-verified COA2 more reports on file | Janoshik AnalyticalLab copy ↗ | Jun 3, 2026 | 99.772% | AMP-2P2005162026-04 |
| EZ Peptides | Lab-verified COA2 more reports on file | Janoshik AnalyticalLab copy ↗ | Aug 19, 2025 | 99.934% | TIR2008072025-04 |
| Evolve Peptides | Product COA on file2 more reports on file | MZ Biolabs | Jan 20, 2026 | Not printed | Not printed |
| AIO Peptides | Product COA on file2 more reports on file | Freedom Diagnostics | Dec 12, 2025 | Not printed | NOTZ201002 |
| Amino Science | Vendor tests other products | – | – | – | – |
| Tirzepatide 20 mg vial 10-pack2 vendors | |||||
| Licensed Peptides | Product COA on file | Vanguard Laboratory | Feb 10, 2026 | 99.8% | TIRZEP-03 |
| EZ Peptides | Vendor tests other products | – | – | – | – |
| Tirzepatide 30 mg vial10 vendors | |||||
| Premier Bio Labs | Lab-verified COA1 more report on file | ILS LaboratoriesLab copy ↗ | Jun 28, 2026 | 99.79% | TIRZPEN01 |
| Amino Science | Lab-verified COA | Freedom DiagnosticsLab copy ↗ | May 18, 2026 | 99.97% | AS-T30-0426 |
| EZ Peptides | Lab-verified COA2 more reports on file | Janoshik AnalyticalLab copy ↗ | Aug 29, 2025 | 99.929% | EZP-TIR3008202025-01 |
| Prime Lab Peptides | Product COA on file1 more report on file | Freedom Diagnostics | Aug 24, 2026 | 99.98% | 032627981TIRZ |
| Ameano Peptides | Product COA on file2 more reports on file | Janoshik Analytical | May 18, 2026 | 99.803% | AMP-2P3004212026-03 |
| Polaris Peptides | Product COA on file2 more reports on file | BTLabs | May 14, 2026 | 99.6% | P2L-T30-19 |
| AIO Peptides | Product COA on file2 more reports on file | Freedom Diagnostics | Mar 7, 2026 | 99.705% | AIOTZ326 |
| NextechLabs | Product COA on file2 more reports on file | Vanguard Laboratory | Oct 23, 2025 | 99.57% | Not printed |
| Evolve Peptides | Vendor tests other products | – | – | – | – |
| Orbitrex Peptides | Vendor tests other products | – | – | – | – |
| Tirzepatide 30 mg vial 10-pack5 vendors | |||||
| Prime Lab Peptides | Product COA on file1 more report on file | Freedom Diagnostics | Aug 24, 2026 | 99.98% | 032627981TIRZ |
| Licensed Peptides | Product COA on file1 more report on file | Vanguard Laboratory | Feb 20, 2026 | 99.8% | LP02202016 |
| EZ Peptides | Vendor tests other products | – | – | – | – |
| NextechLabs | Vendor tests other products | – | – | – | – |
| Premier Bio Labs | Vendor tests other products | – | – | – | – |
| Tirzepatide 60 mg vial9 vendors | |||||
| Premier Bio Labs | Lab-verified COA | ILS LaboratoriesLab copy ↗ | Jun 16, 2026 | 99.93% | GTZ060-02 |
| Amino Science | Lab-verified COA | Freedom DiagnosticsLab copy ↗ | May 18, 2026 | 99.96% | AS-T60-0426 |
| EZ Peptides | Lab-verified COA2 more reports on file | Janoshik AnalyticalLab copy ↗ | Apr 7, 2026 | 99.939% | EZP-2P6003282026-02 |
| Polaris Peptides | Product COA on file1 more report on file | Accumark Labs | Aug 2, 2026 | 99.97% | POL-T50-7 |
| Ameano Peptides | Product COA on file2 more reports on file | Janoshik Analytical | Apr 8, 2026 | Not printed | AMP-2P6003282026-02 |
| Evolve Peptides | Product COA on file | MZ Biolabs | Dec 29, 2025 | 99.83% | 7394186025 |
| AIO Peptides | Product COA on file2 more reports on file | Freedom Diagnostics | Dec 12, 2025 | Not printed | NOTZ201002 |
| NextechLabs | Product COA on file1 more report on file | Vanguard Laboratory | Oct 23, 2025 | 99.53% | V251008-24 005 |
| Orbitrex Peptides | Vendor tests other products | – | – | – | – |
| Tirzepatide 60 mg vial 10-pack3 vendors | |||||
| Licensed Peptides | Product COA on file | Vanguard Laboratory | Feb 20, 2026 | 99.8% | LP02202016 |
| EZ Peptides | Vendor tests other products | – | – | – | – |
| Premier Bio Labs | Vendor tests other products | – | – | – | – |
Picks need a COA for the exact product and strength tested within 12 months; see the methodology.