Peptide digest assay standard is a validated protein digest reference sample optimised for use in quantitative peptide assays to improve reproducibility and accuracy of peptide quantitation in a microplate-based assay.

• Robust peptide assay standard
• Liquid formulation is stored at 4 °C, eliminating variability due to freeze-thaws
• Provided in a liquid format with a known peptide concentration
• Enough for at least ten standard curves, depending on dilution volumes
• Reference protein has been digested with MS-grade trypsin to minimize missed cleavages

Peptide digest assay standard is validated for both the Quantitative Fluorometric Peptide Assay and the Quantitative Colorimetric Peptide Assay with comparable standard curves using both assays.

Digestion efficiency of the protein is monitored to help ensure lot-to-lot consistency, and quality is assessed by comparison to a reference standard.