VERTEX HEALTH LABS
Analytical Report · Research-Grade Peptides
CERTIFICATE OF ANALYSIS
Report VHL-COA-TIRZ-B0005 · Rev 1.0
ProductTirzepatide · 20mg
Lot numberTIRZ-B0005
Testing laboratoryManufacturing laboratory
Analytical methodHPLC
Date of issue6 September 2026
SupersedesNone
← All lab results
Certificate of Analysis
Batch certificate · Lot TIRZ-B0005
Tirzepatide
20mg
All specifications met
99.34% purity (HPLC)
Manufacturer COA
Purity · HPLC
99.34%
As reported on this batch certificate
Batch
TIRZ-B0005
Method
HPLC
How to read this report
- Purity (HPLC)
- Of the peptide material, how much is the exact target compound. This is the headline quality number.
- Total & single impurities
- The small fraction of related peptide by-products. Lower is better.
- Peptide content
- How much of the total powder is peptide versus the bound water and salt it is stored in. The remainder being water and salt is normal for a freeze-dried peptide, not a quality issue.
- Mass spectrum
- Confirms the measured molecular weight matches the target, proof the vial holds the compound named.
- Residual solvents, endotoxin, water
- Cleanliness checks: manufacturing solvents cleared, contamination within limits, and the powder properly dried.
- Pass
- Every result falls inside its listed specification.
| Test | Specification | Result | Status |
|---|---|---|---|
| Appearance | White powder | Conforms | Pass |
| Solubility | Soluble in water | Conforms | Pass |
| Purity (HPLC) | ≥99.0% | 99.34% | Pass |
| Water content (Karl Fischer) | ≤8.0% | 2.54% | Pass |
| Total impurities (HPLC) | ≤1.5% | 0.66% | Pass |
| Largest single impurity (HPLC) | ≤0.5% | 0.31% | Pass |
| Sodium ion | ≤2% | 1.32% | Pass |
| Residual TFA | ≤0.5% | Not detected | Pass |
| Residual acetonitrile | ≤410 ppm | 324 ppm | Pass |
| Microbial count (TAMC) | <100 cfu/g | ≤10 cfu/g | Pass |
| Microbial count (TYMC) | ≤100 cfu/g | ≤10 cfu/g | Pass |
| Bacterial endotoxin | <10 EU/mg | <10 EU/mg | Pass |
Tirzepatide batch history
4 lots of Tirzepatide have a certificate on file. Each was tested on its own batch.
TIRZ-B0051 99.82% TIRZ-B0050 99.85% TIRZ-B0032 99.809% TIRZ-B0005 (this lot) 99.34%Conclusion
All reported specifications met for this lot.
Data verification
Values transcribed from the batch report issued by the testing
laboratory and checked against the source document by two independent reads.
Original report retained on file.
Released by · Vertex Health Labs
Date of issue · 6 September 2026
Scope. This document reports analytical data for
the lot identified above. Vertex Health Labs is not a testing laboratory and makes
no claim of laboratory accreditation. Testing was performed by the laboratory named
in the document control block.
Source: Manufacturer COA for lot TIRZ-B0005. Results are published exactly as reported.
For Research Use Only. Not for human consumption. Not evaluated by the FDA; not intended to diagnose, treat, cure, or prevent any disease. Must be 21+ to purchase.
For Research Use Only. Not for human consumption. Not evaluated by the FDA; not intended to diagnose, treat, cure, or prevent any disease. Must be 21+ to purchase.
