What does 'research grade' mean for a peptide?

It is a sales term with no legal definition. It usually hints that the product is for lab research, not for people to take, the same as 'research use only'. But the phrase does not promise any purity, testing standard, or way of making it. A certificate of analysis (a test report) from an independent lab is the only way to check a specific vial. This site's lab profiles describe what each testing lab tells you about how it reports.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of research peptides, the category. What research peptides are, legally and practically, before getting into specific compounds.