Specific for human N-terminal proBNP (NT-proBNP, a.a.r. 13-20). Can be used for NT-proBNP and proBNP immunoassay; works in WB. Recognizes circulating proBNP and can be used for the development of quantitative proBNP assays in pairs with anti-BNP MAbs (HyTest Cat.# 4BNP2). The best pairs (coating - conjugate): 50E1 (Cat.# 4BNP2) - 16F3.