What is the difference between peptide content and peptide purity?

APeptide content is not an indication of peptide purity; these are two measurements. Purity is determined by HPLC and indicates the presence/absence of contaminating peptides with undesired sequences. Net peptide content only gives information on the percent of total peptide versus total non-peptide components independently of the presence of multiple peptides.

Net peptide content is accurately found by performing amino acid analysis or UV spectrophotometry. This information is important when calculating concentrations of peptide during sensitive experiments. More.

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