Six4Labs supplies high-purity peptides, SARMs, and research compounds — independently tested, batch-traceable, and shipped with full Certificates of Analysis. Built for scientists who need clean inputs.
A selection from the Six4Labs catalog. Every vial ships with a batch-specific Certificate of Analysis.
Each compound we ship is tested by a third-party lab using HPLC and Mass Spectrometry. Certificates of Analysis are batch-numbered and tied to the vial in your hand — not a generic sample. If a batch doesn't hit spec, it doesn't leave the facility.
Browse CertificatesNo shortcuts on sourcing, testing, or shipping. Just clean inputs for the work you're doing.
HPLC + MS testing on every lot. Pass-fail spec, not "trust us."
Orders placed before 2pm CT ship same-day from a US facility.
Plain, temperature-controlled shipments with tracking on every box.
Card, ACH, and crypto checkout — pick what works for your lab.