Peptides 101: A Researcher's Primer
5 min read
What research peptides are, how they're classified, and the terms you'll see on every product page.
What is a peptide?
A peptide is a short chain of amino acids — the same building blocks that make up proteins, just far smaller. Where a protein may contain hundreds of amino acids, most research peptides are between 3 and 50.
That small size is what makes them interesting to researchers: specific, well-defined sequences that can be studied in vitro for their interactions with receptors, enzymes, and signaling pathways.
How they're grouped
On this site peptides are organized by compound class — GLP-1/metabolic, repair & regenerative, growth-hormone secretagogues, cellular/longevity, and collagen/dermal. The same compound can sit in more than one category.
"Blends" combine two or more peptides in a single vial for convenience in a research setting.
Reading a product page
Strength (e.g. 10mg) is the total mass of lyophilized (freeze-dried) peptide in the vial. Purity (we list 99%+) refers to the share of the sample that is the target compound, as measured by HPLC.
Every batch has a Certificate of Analysis (COA) available — see the COA guide below for how to read one.