IDK® Secretory IgA ELISA (sIgA) Bulk Pack (20 Plates)

The IDK® Secretory IgA ELISA Bulk Pack (20 Plates) is an enzyme immunoassay intended for the quantitative determination of secretory IgA (sIgA) in saliva and stool.

FDA Class 1 Exempt. For In Vitro Diagnostic Use. Health Canada Licensed.

For Laboratory Professional Use Only.

The IDK® Secretory IgA ELISA Bulk Pack is compatible with our IDK Extract® Stool Sample Preparation System.

Please inquire about pricing, as each IDK® sIgA ELISA Bulk Pack is customized to meet the needs of your lab.

Developed by Immundiagnostik AG.

IDK® Secretory IgA ELISA Resources

Download our brochure to discover more.

Test Principle of the IDK® Secretory IgA ELISA Bulk Pack

In the first incubation step, the sIgA in the samples is bound to polyclonal antibodies (rabbit anti-human IgA), which are immobilized to the surface of the microtiter wells. To remove all unbound substances, a washing step is carried out.

In the second incubation step, a peroxidase-labeled conjugate (mouse anti-sIgA) is added, specifically recognizing the bound secretory IgA. After another washing step to remove all unbound substances, the solid phase is incubated with a tetramethylbenzidine (TMB) substrate. An acidic stop solution is then added to stop the reaction. The color converts from blue to yellow. The intensity of the yellow color is directly proportional to the concentration of secretory IgA.

A dose-response curve of the absorbance unit (optical density, OD) vs. concentration is generated using the results obtained from the standards. The presence of secretory IgA in the patient samples is determined directly from this curve.