Rat Midkine ELISA Kit is a sandwich ELISA kit for use with Serum, plasma and other biological fluids. This assay has high sensitivity and excellent specificity for detection of Midkine (MK). No significant cross-reactivity or interference between Midkine (MK) and analogues was observed. Please note that this kit is also available as a CLIA Kit. Quantitative Colorimetric Sandwich ELISA. Sample Types: serum, plasma and other biological fluids. Range: 15.62 pg/ml - 1000 pg/ml. Sensitivity: < 7.2 pg/ml