Notes on analysis, documentation and lab practice.
Educational articles for researchers. No medical or dosing information.
BPC-157 vs TB-500: How the Two Research Peptides Differ
A neutral comparison of BPC-157 and TB-500 for laboratory researchers: origin, sequence, size, proposed mechanisms studied in preclinical models and why they are often studied together.
How to Read a Peptide Certificate of Analysis (COA)
A practical guide to the sections of a peptide certificate of analysis: identity, purity, batch number, test methods and what each one tells a laboratory.
HPLC Purity Explained: What the Percentage Really Means
How reversed-phase HPLC is used to estimate peptide purity, how to interpret a chromatogram and the limits of a single purity figure.
Mass Spectrometry and Peptide Identity Testing
Why mass spectrometry is used to confirm peptide identity, what 'observed vs. theoretical mass' means and what it does not prove.
Storing Lyophilised Peptides in the Laboratory
General laboratory practice for storing freeze-dried research peptides: temperature, light, moisture and handling after opening.
Purity vs. Net Peptide Content: Two Different Numbers
Why a vial labelled with a peptide amount contains more than peptide by weight, and how purity and net peptide content differ.
Batch Numbers and Traceability in Research Supply
How batch numbers connect a vial to its analytical documentation and why recording them belongs in every experimental protocol.
"Research Use Only": What the Label Means
What research-use-only (RUO) labelling means for buyers of research peptides, and why suppliers ask for a researcher declaration.
Incretin and Glucagon Receptor Research: An Overview
A neutral introduction to GLP-1, GIP and glucagon receptor research and where multi-receptor agonists such as retatrutide fit in the scientific literature.
BPC-157: The Research Landscape
An overview of where BPC-157 appears in the scientific literature, the nature of the evidence and what remains unknown.
Choosing a Research Peptide Supplier: A Checklist
Questions to ask any research peptide supplier about documentation, testing, traceability, payment and compliance before ordering.