Our Quality Standard
At PepTek, quality is a documented, verifiable standard that applies to every compound in our catalog without exception.
Third-Party Testing — No Exceptions
Every batch of every compound we carry is tested by independent, third-party certified laboratories before it reaches our inventory. We do not rely on supplier-provided documentation or internal quality control claims.
Our testing protocol includes HPLC (High Performance Liquid Chromatography) to confirm compound purity, and Mass Spectrometry to confirm compound identity by verifying molecular weight matches the theoretical profile of the compound. Both tests are required on every batch.
Certificates of Analysis
PepTek is committed to third-party testing on every compound in our catalog. Certificates of Analysis are available and will be published directly on each product page. Any batch that does not meet our purity standards is rejected and does not enter our inventory.
Minimum Purity Threshold
PepTek maintains a minimum purity threshold of 99% across all compounds in our catalog. Any batch that does not meet this threshold is rejected and does not enter our inventory.
Tested In The USA
All compounds are tested by third-party certified laboratories within the United States. Domestic testing eliminates variability and ensures every batch meets our purity and identity standards before it reaches you.