SpecificityThis assay has high sensitivity and excellent specificity for detection of Cystatin 4 (CST4).
No significant cross-reactivity or interference between Cystatin 4 (CST4) and analogues was observed.
Intended UseHuman CST4 ELISA Kit allows for the in vitro quantitative determination of CST4 , concentrations in serum, Plasma , tissue homogenates and Cell culture supernates and Other biological fluids.
StorageStore the whole ELISA kit at 4℃
Product Description specificalPrinciple of the Assay: The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Cystatin 4 (CST4). Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody specific to Cystatin 4 (CST4). Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Cystatin 4 (CST4), biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Cystatin 4 (CST4) in the samples is then determined by comparing the O.D. of the samples to the standard curve.