Specific for human N-terminal proBNP (NT-proBNP, a.a.r. 13-20). Can be used for NT-proBNP and proBNP immunoassay, best pairs for sandwich immunoassay (coating - conjugate): 15C4 - 13G12; 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)