ELISA Plate is a specialized microplate designed for enzyme-linked immunosorbent assay (ELISA) applications used to detect and quantify proteins, antibodies, hormones, or other biomolecules in biological samples. ELISA plates are typically made of high-binding polystyrene with surface treatments that promote efficient adsorption of proteins such as capture antibodies or antigens to the well surface. During an ELISA assay, target molecules bind to immobilized capture reagents on the plate and are subsequently detected using enzyme-conjugated antibodies that generate a measurable signal upon addition of a chromogenic, fluorogenic, or chemiluminescent substrate. The intensity of the signal is proportional to the amount of analyte present and can be quantified using a plate reader. ELISA plates are widely used in immunology, clinical diagnostics, vaccine research, and biomedical studies to measure cytokines, antibodies, hormones, and other soluble factors in serum, plasma, cell culture supernatants, or other biological samples. These plates provide a reliable and high-throughput platform for sensitive detection and quantification of biomolecules in laboratory and diagnostic assays.