D-Dopachrome Tautomerase (DDT) BioAssay(TM) ELISA Kit (Human)

The D-Dopachrome Tautomerase (DDT) BioAssay(TM) ELISA Kit is a quantitative sandwich assay for the detection of DDT in human serum and plasma and other biological fluids. Cell lysates and tissue homogenates have not been tested but may potentially be used as samples. Detection Range: 0.313-20ng/ml, Sensitivity: <0.188ng/ml, Precision: Intra-Assay CV: <8%, Inter-Assay CV: <10%, Assay Principle: This ELISA kit employs the sandwich enzyme-linked immunoassay technique, utilizing a microtiter plate pre-coated with an antibody specific to DDT. Standards and samples are added to the appropriate wells, then incubated. Aspirate and wash the plate. The Antibody (Biotin) is added to all the wells. The plate is incubated and then washed. Streptavidin (HRP) is added to each microplate well and incubated then washed. Then the TMB substrate solution is added and incubated. After the TMB substrate solution is added, only those wells that contain DDT, the antibody (Biotin) and Streptavidin (HRP) 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 DDT in the sample is then determined by comparing the O.D. of the sample to the standard curve. Kit Components: 355229A: Microtiter Strips, 1x48 wells or 1x96 wells , 355229B: Standard, 1x1vial or 2x1vial, 355229C: Sample/Standard Dilution Buffer, 1x10ml or 1x20ml, 355229D: Antibody (Biotin) (Concentrated), 1x60ul or 1x120ul, 355229E: Antibody Dilution Buffer, 1x5ml or 1x10ml, 355229F: Streptavidin (HRP) (SABC), 1x60ul or 1x120ul, 355229G: SABC Dilution Buffer, 1x5ml or 1x10ml, 355229H: TMB Substrate, 1x5ml or 1x10ml, 355229J: Stop Solution, 1x5ml or 1x10ml, 355229K: Wash Buffer, 25X, 1x15ml or 1x30ml, Storage and Stability: Store unopened *355229A at 4ºC, store at -20ºC once opened. Store unopened *355229B 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 15-30 minutes at 37°C, 8. Add 50ul Stop Solution. Read at 450nm immediately., 9. Calculate results