The Human PDGFR alpha ELISA (Enzyme-Linked Immunosorbent Assay) kit is an in vitro enzyme-linked immunosorbent assay for the quantitative measurement of human PDGFR alpha in serum, plasma (Collect plasma using EDTA and heparin as anticoagulants. Citrate is not recommended as an anticoagulant for use in this assay), cell culture supernatants and urine.