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Campbell SK, Zawacki L, Rankin KM, et al

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A typical COA for peptide research materials may include: Identity confirmation , such as mass spectrometry analysis or sequence verification methods appropriate for peptide characterization Purity assessment , commonly determined using high-performance liquid chromatography (HPLC) or comparable chromatographic techniques Relevant physicochemical characteristics , including molecular weight confirmation and appearance of the lyophilized material Lot number, testing date, and analytical method references used during quality evaluation Laboratory verification details , including documentation of independent or third-party analytical testing where applicable Certificates of Analysis are available for review in PDF format on the product page or upon request, allowing researchers to verify analytical documentation associated with each product lot

Reporting followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) where applicable, with emphasis on transparent identification of available evidence rather than quantitative pooling

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