After Hours Labs
Research Library
Plain-language guides on peptide quality, testing, storage and research pathways, written for qualified laboratory researchers. 9 articles.
Fundamentals
Start here: what peptides are and what research-use-only means.
FundamentalsWhat Are Peptides? A Primer for ResearchersWhat peptides are, how they signal, how they differ from proteins and hormones, and how to weigh the evidence behind a research compound.FundamentalsWhat “Research Use Only” (RUO) Means for PeptidesWhat the research-use-only label actually means, how RUO differs from approved and compounded drugs, and why it is not a quality grade.FundamentalsStoring and Handling Lyophilized Research Peptides: Laboratory BasicsHow to store lyophilized and reconstituted research peptides, avoid moisture and freeze–thaw damage, and protect sensitive residues from oxidation.
Quality & testing
How to read the documents that prove what is in a vial.
Quality & testingHow to Read a Peptide Certificate of Analysis (COA)A practical walkthrough of a research peptide COA: batch numbers, identity by mass spectrometry, HPLC purity, chromatograms and the red flags that mean a COA cannot…Quality & testingHPLC Purity Explained: What “99% Pure” Really Means for Research PeptidesHow HPLC measures peptide purity, what the percentage includes and leaves out, and why purity, identity and content are three different questions.Quality & testingHow to Vet a Research Peptide Supplier: Red Flags and a 10-Point ChecklistThe warning signs that separate well-documented research peptide suppliers from risky ones, plus a 10-minute verification routine and a printable checklist.
Compound research
Mechanisms and comparisons for the compounds researchers ask about most.
Compound researchBPC-157 vs. TB-500: A Research OverviewHow BPC-157 and TB-500 differ in origin, structure and the laboratory models they are studied in — and why they are often researched together.Compound researchCJC-1295 With DAC vs. Without DAC (Mod GRF 1-29): What’s the Difference?Two different research compounds share the name CJC-1295. How the DAC version and Mod GRF 1-29 differ in structure, half-life and research design.Compound researchIncretin Receptor Research Explained: GLP-1, GIP and Glucagon ReceptorsA primer on the three receptors behind incretin-class research peptides — GLP-1R, GIPR and GCGR — and why single, dual and tri-agonists are studied.
All After Hours Labs products are sold strictly for qualified in-vitro laboratory research. Not for human or veterinary use. Articles are educational and are not medical advice.
