ELK1967-48T, Human CYFRA21-1(Cytokeratin Fragment Antigen 21-1) ELISA Kit, 48T

Alternative Names: CYFRA21-1

Species: Human

Assay Type: Sandwich

Sensitivity: 0.117 ng/mL

Standard: 20 ng/mL

Detection range: 0.32-20 ng/mL

Sample type: serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids

Assay length: 3.5h

Research Area: Tumor immunity;Dermatology;

Test principle: 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 Human CYFRA21-1. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human CYFRA21-1. 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 Human CYFRA21-1, 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 Human CYFRA21-1 in the samples is then determined by comparing the OD of the samples to the standard curve.