Our research peptides are tested by an independent third-party laboratory. Request the certificate of analysis (COA) for your batch at any time.
Each product is checked across five areas before it is sold for laboratory research.
High-performance liquid chromatography measures the purity percentage of the compound.
Screens for bacterial endotoxins, reported in endotoxin units (EU).
Total aerobic microbial count – a measure of bacterial load in the sample.
Total yeast and mould count – checks for fungal contamination.
Screening for metals such as lead, arsenic, cadmium and mercury against accepted limits.
Testing is carried out by a third-party laboratory, not in-house, so results are independent of us.
Certificates are matched to production batches, so we send you the report for the exact batch you received.
| Compound & batch | ✓ |
| Purity (HPLC) | ✓ |
| Endotoxin result | ✓ |
| TAMC / TYMC | ✓ |
| Heavy metal screen | ✓ |
| Testing laboratory & date | ✓ |
A certificate of analysis is the laboratory’s record of what it found when testing a sample from the batch.
HPLC separates the sample into its components. The main peak’s share of the total area is reported as the purity percentage.
Endotoxin units – a standardised measure of bacterial endotoxin activity. Lower is better.
Colony counts for aerobic bacteria (TAMC) and yeasts and moulds (TYMC), usually reported in CFU per gram or millilitre.
Results apply to the batch tested. Matching your order to its batch makes sure the certificate relates to the material you received.
Send us your order number and we’ll email the COA for your batch.