Research-use information: This article is educational and limited to research and laboratory information. It does not provide medical, diagnostic, clinical, dosing, administration or consumption guidance.
Terms such as purity, identity, assay and method are often used as if they have a single fixed meaning. Their usefulness depends on how the term is defined in the specific document being read.
Key points to consider
- Check the surrounding method description before relying on an analytical term.
- Use the document’s own wording in research notes where possible.
- Ask for clarification when a term is used without a stated scope or reference.
A practical way to use this information
Context turns a familiar word into information that can be reviewed and understood by others.
Related resource: Peptide Glossary.