Cell Biolabs’ DYKDDDDK-Tag Protein ELISA Kit is a competitive enzyme immunoassay for rapid detection and quantitation of DYKDDDDK-tagged protein samples. The quantity of DYKDDDDK-tag in a protein sample is determined by comparing its absorbance with that of a known DYKDDDDK-tag protein standard. The kit has detection sensitivity range of 5 µg/mL to 78 ng/mL DYKDDDDK-tag GST protein standard, or 180 nM - 2.8 nM DYKDDDDK-tag residues. Each kit provides sufficient reagents for up to 96 assays including standard curve and DYKDDDDK-tag samples.