The Lactate Dehydrogenase A (LDHA) BioAssay™ ELISA Kit is a sandwich ELISA for the in vitro quantitative determination of LDHA concentrations in human serum, plasma and other biological fluids.||Detection Range:|0.78-50ng/ml||Sensitivity:|0.47ng/ml||Precision:|Intra-Assay %CV: <10%|Inter-Assay %CV: <10%||Specificity:|Recognizes human LDHA. No significant cross-reactivity or interference between human LDHA and analogues was observed.||Test Principle:|The microtiter plate provided in this kit has been pre-coated with an antibody specific to LDHA. Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody specific to LDHA. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. Free components are washed away. The substrate solution is added, only those wells that contain LDHA, biotin-conjugated antibody and enzyme-conjugated Avidin will apear blue in color. The enzyme-substrate reaction is terminated by the addition of sulfuric acid solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450nm ± 2nm. The OD value is proportional to the concentration of human LDHA. The concentration of LDHA in the sample is then determined by comparing the O.D. of the sample to the standard curve.||Kit Components:|*383544A: Microtiter Strips, 1x96 wells, Pre-coated; ready to use|*383544B: Standard, 2x1vial |383544C: Standard Diluent, 1x20ml|*383544D: Biotin Detection, 100X, 1x120ul |*383544E: HRP Conjugate, 100X, 1x120ul |383544F: Biotin Detection Diluent, 1x14ml|383544G: HRP Diluent, 1x14ml|383544H: Substrate, 1x10ml|383544K: Stop Solution, 1x10ml|383544L: Wash Buffer, 25X, 1x30ml ||Storage and Stability:|Store *383544A, *383544B, *383544D and *383544E at -20°C. Store all the other components at 4°C. Unused kit is stable for 6 months after receipt. Once kit components are opened, it is highly recommended to use remaining reagents within 1 month provided this is within the expiration date of the kit. For maximum recovery of product, centrifuge the original vials after thawing and prior to removing the cap.||Assay Procedure Summary:|1. Prepare all reagents, samples and standards.|2. Add 100ul standard or sample to each well. Incubate 90 minutes at 37°C.|3. Aspirate and add 100ul prepared Biotin Working Solution. Incubate 1 hour at 37°C.|4. Aspirate and wash 3 times.|5. Add 100ul prepared HRP Detection Working Solution. Incubate 30 minutes at 37°C.|6. Aspirate and wash 5 times.|7. Add 90ul Substrate. Incubate 15 minutes at 37°C.|8. Add 50ul Stop Solution. Read at 450nm immediately.