Written by the AllMyPeptides Research Team
Understanding the Language of Peptides
The world of research peptides comes with its own vocabulary, and for a newcomer the terminology can be a barrier to making informed decisions. This glossary explains the terms encountered most often — on product pages, Certificates of Analysis and supplier websites — in plain English.
Key Research Peptide Terms
The terms below appear most frequently across peptide research:
Peptide
A short chain of amino acids linked together. Research peptides are synthetic versions made for laboratory study.
Lyophilised
Freeze-dried. Peptides are more stable dry than in solution and are reconstituted before use.
Reconstitution
Dissolving lyophilised powder into a liquid using bacteriostatic water; the water volume sets the final concentration.
Bacteriostatic Water
Sterile water containing benzyl alcohol, which inhibits bacterial growth. It is the preferred diluent and allows weeks of storage.
HPLC
High-performance liquid chromatography; measures purity by separating a sample's components and quantifying the target peptide.
Mass Spectrometry
Confirms a peptide's identity by measuring its molecular weight against the expected value.
Certificate of Analysis (COA)
An independent-laboratory document recording a peptide's identity, purity and testing methods. A batch-matched COA is specific to your batch.
Purity
The proportion of a sample that is the target peptide, expressed as a percentage by HPLC. High-quality peptides are 99%+.
RUO (Research Use Only)
Indicates a product is solely for laboratory research, not for human or animal consumption. All research peptides are sold on this basis.
Blend
A product combining two or more peptides in a single vial, such as the Wolverine blend (BPC-157 and TB-500).
Ready to move from terminology to the lab? Browse BPC-157 and the full range, each COA-verified to 99%+ purity.
Shop BPC-157Frequently Asked Questions
What does lyophilised mean?+
What does RUO mean?+
What is a Certificate of Analysis?+
What is the difference between HPLC and mass spectrometry?+
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Products discussed in this guide are for research and laboratory use only. AllMyPeptides does not condone or support misuse of any research materials. Not for human or animal consumption.