What your health data isn't telling you
Plain explanations of the things that sit just outside what a wearable, a label or a laboratory report actually shows you — written by the team building peppies.
Peptides: what they are, and what to know first
What a peptide is chemically, where you meet one, what “research use only” means — and why the certificate matters more than the word tested.
Buying peptides: what to check first
Seven questions to go through before any order, with any seller. No recommendation — what to ask.
Five things your wearable can't tell you
A ring measures movement, temperature and pulse. Here's what it can't see — and the four markers that can.
Four questions to ask before you trust a certificate of analysis
A certificate is one page. Most people read the wrong line on it.
What actually happens in an at-home blood test
Step by step — including the parts that can go wrong, and the markers we won't run from a home sample.
Get the guides and your own baseline
A free peppies account gets you the tools behind these guides — verification records, home blood testing and clinician access, in one place.