Human SP-D (Pulmonary surfactant-associated protein D) ELISA Kit

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 Human SP-D. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human SP-D. 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 Human SP-D, 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 Human SP-D in the samples is then determined by comparing the OD of the samples to the standard curve.. Detection Range: 1.25-80 ng/mL. Sensitivity: 0.52 ng/mL. Assay Type: Sandwich. Standard: 80 ng/mL. Sample Type: serum, plasma, tissue homogenates, cell lysates, lung lavage fluid, cell culture supernates and other biological fluids. Assay duration: 3.5h