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Peptide science, explained plainly
Short, factual guides for researchers. For laboratory research use only.
- What are peptidesShort chains of amino acids joined by peptide bonds, and how they are made for research.
- Peptides vs proteinsBoth are amino-acid chains. Length, folding and how they are produced set them apart.
- How to read a certificate of analysisWhat each section of a COA tells you, and what to check before you rely on it.
- What purity percentages meanHPLC purity is a share of peak area. Here is what it measures, and what it does not.
- Why peptide prices varyChain length, chemistry, purification, testing and fill size all move the cost.
- Why peptides ship freeze-driedLyophilisation removes water, the main driver of peptide degradation in transit and storage.
- Storage and handlingTemperature, light, moisture and labelling practices for sealed lyophilised vials.
- Shipping in cold weatherHow winter conditions affect parcels, and what we do about them.
- GlossaryPlain definitions of the terms you'll meet on certificates and product pages.
See the documents. Every published certificate of analysis is on our Lab Results page. A lot without a published certificate is marked "COA pending".