RUO ('research use only') is the legal classification for peptides sold by US-based research-chemical vendors. The vials are labeled 'not for human consumption' as legal cover. The molecule is real — usually the same compound from the same overseas factory that supplies legitimate pharma compounders — but there's no FDA oversight, no prescription required, and the COA accompanying each batch varies in honesty. RUO is what most off-label peptide users buy.
Related terms
- COA (Certificate of Analysis)Third-party lab report verifying purity and identity of a peptide batch.
- Compounded (503A)Mixed by a state-licensed pharmacy with a real prescription.
- FDA-approvedCleared by the FDA for at least one indication.
- Gray marketDirect-from-factory raws, coordinated via Discord/Telegram. 5-10× cheaper than RUO.