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Product Description
Human CST4 (Cystatin 4) ELISA Kit | ELK3152 | ELK Biotechnology
Alternative Names: Cystatin S; Salivary acidic protein 1; Cystatin-SA-III
Species: Human
Assay Type: Sandwich
Sensitivity: 0.066 ng/mL
Standard: 10 ng/mL
Detection Range: 0.16-10 ng/mL
Sample Type: Serum, plasma, saliva, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
Assay Lenght: 3.5h
Research Area: Immune molecule
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 Cystatin 4 (CST4) . Standards or samples are added to the appropriate microtiter plate wells then 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 OD of the samples to the standard curve.
