How we research and test

Every study on this site is indexed from primary databases: PubMed, Europe PMC and ClinicalTrials.gov for research and trials, and the Federal Register, FDA, ANSM and WADA for regulatory status. We do not treat secondary blogs as evidence. Each study is graded by its strongest design, on a six-level scale: human RCT, human trial, review, animal, in-vitro, or unknown. The grade is assigned by deterministic rules first, from the publication type and trial-registry fields; only records the rules cannot resolve are classified by a language model. Be clear on the limits: study-level classification is automated and is not individually checked by a person, so it can contain errors. The curated summary and regulatory timeline on each fiche are human-written. The evidence-profile bar shows the full distribution, so the dominant level of evidence, usually animal or in-vitro for research peptides, is never hidden behind a single favourable study. Data is refreshed regularly and pages that change are re-dated. Spotted an error? Email the address below and we will correct it.