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Product Description
Human sIgA (Secretory Immunoglobulin A) ELISA Kit | ELK1844 | ELK Biotechnology
Alternative Names: S-IgA
Species: Human
Assay Type: Sandwich
Sensitivity: 0.098 ug/mL
Standard: 20 ug/mL
Detection Range: 0.312-20ug/ml
Sample Type: serum, plasma, saliva, stool, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
Assay Lenght: 3.5h
Research Area: Infection immunity;Immune molecule;Reproductive science;Genetic science;Dermatology;Immunodeficiency
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 Secretory Immunoglobulin A (sIgA) . Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Secretory Immunoglobulin A (sIgA) . 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 Secretory Immunoglobulin A (sIgA), 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 Secretory Immunoglobulin A (sIgA) in the samples is then determined by comparing the OD of the samples to the standard curve.
