Batch testing, published before you buy.
Every bottle carries a unique batch testing ID linked to a comprehensive certificate of analysis from an independent ISO 17025-accredited US laboratory.
Every certificate, before you buy.
Search by compound or lot number. Each PDF is the batch-specific certificate issued by an independent ISO 17025-accredited US laboratory.
Comprehensive COAs on every batch.
Most suppliers test for purity. We go further — verifying everything purity testing can't see.
HPLC purity
Purity ≥99%, full chromatogram on the COA.
Mass spectrometry
Confirms molecular identity and sequence.
Net content
Measured mg matches the label.
Heavy metals
Lead, mercury, arsenic, cadmium screened.
Microbiological
Bacterial and fungal contamination.
Residual solvents
Leftover synthesis solvents screened.
A compound can look pure and still carry contaminants.
Every certificate is generated by an independent, ISO 17025-accredited US lab and published at generalpeptide.com before any order is placed. Batch-specific. Never generic.
Browse COA library| What the certificate covers | Purity-only COA | General Peptide COA |
|---|---|---|
| HPLC purity | ✓ | ✓ |
| Mass spec identity | — | ✓ |
| Net content (mg) | — | ✓ |
| Heavy metals | — | ✓ |
| Microbiological | — | ✓ |
| Residual solvents | — | ✓ |
| Batch-specific, published before sale | — | ✓ |