Quality & Certificates of Analysis

Quality and traceability are central to everything we ship.

Certificates of Analysis

Every product is lot-traceable, and a lot-specific Certificate of Analysis (COA) covering identity and purity is available on request and referenced under Documents & Certificates on each product page.

Handling & Storage

Lyophilized and reconstituted peptides are temperature-sensitive. We refrigerate inventory at 2–8°C, protect from light, and ship temperature-sensitive items overnight in insulated, temperature-controlled packaging.

Sourcing

Products are sourced through the Best Choice and Doctor's Choice warehouses under consistent quality controls so you receive the same product, lot after lot.

All products are for research and professional use only.