Research peptide legality in the United States is governed by federal law — specifically the Controlled Substances Act and FDA regulations — not state law. In all 50 states, research peptides are legal to purchase, possess, and use for legitimate scientific research. No state has enacted legislation that specifically restricts or bans research peptide compounds beyond the federal framework.
Our Recommended Supplier: Purgo Labs
Purgo Labs is a US-based research peptide supplier offering ≥99% HPLC-verified compounds with batch-specific COA documentation. Ships to all 50 states with 2–5 day delivery. Compounds include BPC-157, TB-500, CJC-1295, Ipamorelin, GHK-Cu, NAD+, Epithalon, MOTS-c, and GLP-1 analogues.
Supplier Quality Checklist
Third-party COA with batch-specific lot number. HPLC purity ≥99%. Mass spectrometry confirmation of correct molecular weight. US-based manufacturing. Lyophilized powder in amber vials. No therapeutic claims on product pages.
State-by-State Legal Status
Research peptides are federally regulated — there is no meaningful state-to-state legal variation for research compounds. All 50 states: Legal for research use. Shipping available nationwide. No state-specific restrictions on research peptide compounds as of 2026. Alaska and Hawaii have extended shipping times (3–7 days) due to geography.
How to Verify a Certificate of Analysis
1. Locate the batch-specific COA on the supplier's website. 2. Confirm the lot number matches the vial. 3. Check HPLC purity ≥99%. 4. Verify mass spectrometry confirms correct molecular weight. 5. Confirm the COA is from an independent third-party laboratory, not the supplier's in-house lab.