Certificate of Analysis (COA)
A document reporting results and identifying information for a represented material or batch.
20 laboratory terms
Research peptide & COA glossary
Plain-language definitions for the terminology used across product records, batch documents, analytical reports, and laboratory workflows.
Batch / Lot number
An identifier connecting a specific production group to inventory, testing, and research records.
HPLC
High-performance liquid chromatography, an analytical separation method commonly used to report chromatographic purity.
Mass spectrometry (MS)
An analytical method that measures mass-to-charge information and can support molecular-identity confirmation.
Purity
The reported proportion attributable to the primary chromatographic component under the stated test method and conditions.
Identity
Evidence that the analyzed material corresponds to the expected compound or molecular target.
Content mass
The measured amount of material associated with a vial or sample, reported separately from chromatographic purity.
Endotoxin
Bacterial lipopolysaccharide measured with a validated assay and reported using the laboratory’s stated units.
LAL assay
Limulus amebocyte lysate testing used to detect or quantify bacterial endotoxin under defined conditions.
Lyophilized
Freeze-dried material produced by removing water under controlled low-temperature and vacuum conditions.
Chromatogram
A plot showing detector response over separation time, including peaks used in chromatographic interpretation.
Retention time
The elapsed time at which an analyte or peak is observed during a chromatographic method.
Reference standard
A characterized material used for comparison, identification, calibration, or method suitability.
Specification
A predefined acceptance criterion applied to a material, method, or reported result.
Method
The documented analytical procedure and conditions used to generate a reported result.
Traceability
The ability to connect a product, lot, document, order, and research record through reliable identifiers.
Chain of custody
The documented possession, transfer, handling, and control history of a sample.
SKU
A stock-keeping identifier used to distinguish catalog products, formats, or variants.
In vitro
Research performed outside a living organism, commonly in controlled laboratory vessels or systems.
Research use only (RUO)
A designation restricting a material to laboratory research and excluding human, veterinary, diagnostic, or therapeutic use.