The peptide research library
Long-form references and tools for researchers. Compound backgrounds, analytical method explainers, and handling protocols. Informational only, framed for laboratory research use, not medical advice or human dosing guidance.
Compound & research guides
How to Read a Certificate of Analysis (COA)
Understand the key fields on a peptide COA: HPLC purity, mass spectrometry identity confirmation, what third-party testing labs like Janoshik report, and how to interpret the data.
Read guide →BPC-157 vs TB-500: A Research Overview
A comparative research overview of BPC-157 (a synthetic pentadecapeptide) and TB-500 (a thymosin beta-4 fragment), examining their structural differences, mechanisms studied in preclinical research, and how they are typically investigated.
Read guide →Understanding Peptide Purity and Identity
A technical reference explaining the distinction between purity and identity, the testing methods used to measure each, and what the numbers on a certificate of analysis actually represent for research applications.
Read guide →Peptide Storage and Handling in the Laboratory
Practical reference for researchers on storing lyophilized and reconstituted peptides: temperature requirements, light sensitivity, freeze-thaw cycles, shelf life considerations, and laboratory best practices.
Read guide →Are Research Peptides Legal in 2026?
A neutral, plain-language overview of the regulatory status of research peptides in the United States as of 2026, including FDA Research Use Only (RUO) framing, recent agency actions, and what the current landscape means for legitimate laboratory researchers.
Read guide →BPC-157: Research Background and Laboratory Context
What BPC-157 is, the research models it appears in, and how it is handled in the laboratory. A factual, research-use-only reference for the synthetic pentadecapeptide.
Read guide →GHK-Cu (Copper Peptide): Research Background and Laboratory Context
What the copper tripeptide GHK-Cu is, the research and cosmetic-science contexts it appears in, and how it is handled in the lab. A factual, research-use-only reference.
Read guide →Start here
Peptide calculator
Work out reconstitution and syringe units for your research.
Open calculator →Lab testing & COAs
How we verify purity and identity, and how to read a certificate.
See lab testing →FAQ
Research-use policy, shipping, storage, COAs, and more.
Read FAQ →Shop by research area
Browse compounds grouped by the area they're studied in.
Browse areas →Questions about a compound?
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