Sjogren Syndrome Antigen A (SSA) BioAssay™ ELISA Kit (Human)

Kits and Assays / Kits-ELISA (Autoimmune), BioAssay™

4°C/-20°C

The Sjogren Syndrome Antigen A (SSA) BioAssay™ ELISA Kit is a quantitative sandwich assay for the detection of SSA in human serum, plasma and other biological fluids. Cell lysates and tissue homogenates, though not tested, may potentially be used as samples.

Detection Range:
0.156-10ng/ml

Sensitivity:
0.094ng/ml

Precision:
Intra-Assay: CV<8%
Inter-Assay: CV<10%

Assay Principle:
The microtiter plate provided in this kit has been pre-coated with an antibody specific to SSA. Standards and samples are added to the appropriate microtiter plate wells followed by a biotin-conjugated antibody specific to SSA. Streptavidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain SSA, Biotin-conjugated antibody and enzyme-conjugated Streptavidin complex will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulfuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of SSA in the sample is then determined by comparing the O.D. of the sample to the standard curve.

Kit Components:
*370240A: Microtiter Strips, 1x48 wells or 1x96 wells
*370240B: Standard, 1x1vial or 2x1 vial
370240C: Sample/Standard Dilution Buffer, 1x10ml or 1x20ml
370240D: Antibody (Biotin) (Concentrated), 1x60ul or 1x120ul
370240E: Antibody Dilution Buffer, 1x5ml or 1x10ml
370240F: Streptavidin (HRP) (SABC), 1x60ul or 1x120ul
370240G: SABC Dilution Buffer, 1x5ml or 1x10ml
370240H: TMB Substrate, 1x5ml or 1x10ml
370240J: Stop Solution, 1x5ml or 1x10ml
370240K: Wash Buffer, 25X, 1x15ml or 1x30ml

Storage and Stability:
Store unopened *370240A at 4ºC; store at -20ºC once opened. Store unopened *370240B at 4°C; once reconstituted, store at 4°C for up to 12 hours or at -20°C for up to 48 hours. Store other components at 4°C. Kit is stable for 6 months after receipt. For maximum recovery of product, centrifuge the original vials after thawing and prior to removing the cap.

Assay Summary:
1. Wash plate 2 times before adding standards and samples to wells!
2. Add 100ul standard or sample to each well and incubate for 90 minutes at 37°C. Aspirate and wash 2 times.
3. Add 100ul Antibody (Biotin) working solution to each well and incubate for 60 minutes at 37°C.
4. Aspirate and wash 3 times.
5. Add 100ul SABC working solution to each well. Incubate for 30 minutes at 37°C
6. Aspirate and wash 5 times.
7. Add 90ul TMB substrate. Incubate 10-20 minutes at 37°C
8. Add 50ul Stop Solution. Read at 450nm immediately.
9. Calculate results