Also called RUO · not for human use · laboratory use only
Research Use Only (RUO) is a label indicating that a product is intended solely for in vitro or non-clinical research and has not been assessed for safety or efficacy in humans. Most research peptides are sold RUO; they are not FDA-cleared for human use and are not intended for administration to people.
Research use only. This definition is an educational reference, not medical advice or dosing guidance.