Question
New here? Three questions to ask about any peptide claim
If you're just getting into peptides, these three questions filter out most of the hype:
- Is it human evidence? A result in mice is a hypothesis, not proof. Compounds with only animal/cell data top out at Grade D on our scale.
- What's the regulatory status? "Approved," "investigational," and "research-only" are completely different things.
- How mature is the evidence overall? We grade every compound A–D by how strong the human evidence is — not by how safe it is.
Grades measure research maturity, not safety or whether something is right for you.
Browse the graded Library and the Learn guides, then ask anything here — no question is too basic.
Peer Notes(2)
Sign in to add a Peer Note.
TR
New Vial · 40
Probably a basic question: how do you tell quickly whether a "study" is human or animal without reading the whole paper?
MK
Signal Contributor · 240
Not basic at all. Check the Methods for the species first — "C57BL/6 mice" or "Sprague-Dawley rats" = preclinical. If there's a registered trial (an NCT number), it's human. The abstract usually gives it away in one line.