Thrombospondin ELISA kits are assays designed to measure levels of thrombospondin protein in biological samples, such as plasma, serum, culture extracts, and cell lysates. The thrombospondin family of multifunctional proteins include the following members: TSP-1, TSP-2, TSP-3, TSP-4, and TSP-5. TSP-1 and TSP-2 are homotrimers, while TSP-3, TSP-4, and TSP-5 are homopentamers. These proteins play diverse roles, such as synaptogenesis in the developing central nervous system and aggregation of activated platelets in hemostasis. TSP-1 and TSP-2 are produced by immature astrocytes during brain development. Click on the ELISA products below and visit the supplier for more information, including assay sensitivity and target specificity.