Tirzepatide vs. retatrutide: dual agonist versus triple agonist
The difference between tirzepatide (GLP-1/GIP) and retatrutide (GLP-1/GIP/glucagon), what published clinical trials have shown and why the two are compared.
Blog
Science, explained simply
Articles on peptides, analytical quality and good laboratory practice.
99% purity by HPLC: what that number really means
How high-performance liquid chromatography (HPLC) measures peptide purity, why mass spectrometry complements it and what to look for in the report.
How to read a peptide certificate of analysis (COA)
A practical guide to every field on a peptide certificate of analysis: batch, purity, chromatogram, molecular mass and appearance.
How to store lyophilized and reconstituted peptides
Temperature, light, moisture and shelf life: the rules for keeping peptides stable as a powder and after reconstitution.
GHK-Cu: the copper peptide studied in skin, collagen and hair
What GHK-Cu is, why it is blue, what research shows on collagen, wound healing and hair follicles, and how it differs from AHK-Cu.
What peptides are and why they are at the center of research
Peptides are short chains of amino acids that act as signals in the body. Learn how they are made in the lab and which fields study them most.