Peptide testing
Every vial makes a claim. Seven tests hold it to its evidence.
Peptides are UV active, so any commercially available peptide can be tested. The one qualification is access to an analytical reference standard for obscure peptides, which can be met with raw material instead.
Three tests speak to the peptide
All three run from a single injection on the HPLC-MS and share one 10mg sample. The laboratory's usual package.
- Potency (concentration)What is the concentration of peptide in the vial, checked against the label claim?
- PurityWhat is the purity of the peptide in the vial, checked against the label claim?
- Mass ConfirmationIs the peptide what the product states it is?
Four tests speak to the product
Each establishes nothing about the peptide itself. They answer questions about the vial the peptide arrives in, and each needs its own sample.
- EndotoxinsAre endotoxins present in the sample?
- SterilityIs the product free from bacterial contamination?
- MetalsWhat heavy metal concentrations are present in the product?
- pHWhat is the pH of the product?