Info
Purity & testing standards.
PSL Peptides exists for one reason: to give the looksmaxxing community a reference catalog they can trust. Every vial we dispatch passes the same four checks.
HPLC Verified
Every batch is independently tested via High-Performance Liquid Chromatography. We publish certificates of analysis on request.
≥ 99.2% Standard
Our floor is 99.2% purity. Most batches exceed 99.4%. Anything below standard is rejected — no exceptions.
Cold-Chain Integrity
Lyophilized vials are stored and shipped under controlled temperature to preserve molecular integrity.
Dispatched from USA
Fulfilled from our US facility for fast, traceable shipping with end-to-end chain of custody.