All peptides · Gonadorelin · COAs
Gonadorelin COA & lab test results
4 certificates of analysis published by 4 vendors, newest first.
4with readable numbers
99.76%median purity
114%median measured vs label
4testing labs
Labs: BioRegen, Freedom Diagnostics, MDx BioAnalytical Laboratory, Vanguard Laboratory.
| Vendor | Lab | Date | Label | Measured | Purity | |
|---|---|---|---|---|---|---|
| Pure Peptide Labs | Freedom Diagnostics | 2026-09-10 | 5 mg | 6.11 mg (122%) | 99.95% | View |
| Core Peptides | Vanguard Laboratory | 2026-08-21 | 10 mg | – | 99.43% | View |
| Amino Usa | BioRegen | 2026-08-19 | 10 mg | 11.4 mg (114%) | 99.34% | View |
| Bulk Peptide SupplyCOA concerns | MDx BioAnalytical Laboratory | 2026-06-27 | 10 mg | 10.96 mg (110%) | 99.76% | View |
A vendor's COA shows one tested sample, not every batch. Numbers are filled in only where the document is readable text; image-only COAs are linked without numbers. Vendors banned for fake reports are excluded. Compare Gonadorelin prices and lab-verified vendors.