Your Trusted Source for Peptides.

Westcoast Labs provides high-quality research-use peptides. Browse our catalog and find everything you need for your laboratory work.

99% Purity Guaranteed

Every batch undergoes rigorous third-party purity testing to ensure 99%+ purity standards are met.

CoA With Every Batch

A Certificate of Analysis is included with every product, giving you full transparency into what you're receiving.

Fast & Secure Shipping

Orders ship fast in discreet, secure packaging to protect your privacy and ensure safe delivery.

Featured Products

Research peptides, third-party identity tested. Browse our full catalog.

Quality you can trust and verify.

Every batch is independently tested by accredited U.S. laboratories. We don’t ask you to take our word for it — we give you the proof.

99%+

Purity Guaranteed

100%

Orders Shipped

Every

Batch CoA Included

24h

Fast Shipping

WHY WESTCOAST LABS

Everything you need to succeed

Research-grade quality

U.S.-based provider. Every batch undergoes rigorous third-party identity and content testing with full documentation.

Researcher-friendly pricing

Documented quality procedures combined with research-grade pricing; keeping high identity purity research supply accessible.

Independently verified

HPLC and Mass Spectrometry testing on every batch by accredited U.S. laboratories. Free CoA included.

Fast & discreet delivery

Orders ship fast in secure packaging. Free shipping on orders over $125, anywhere in the U.S.

Ready to start your research?

Browse our complete catalog of research peptides with verified purity and full documentation.