Specific for human BNP and proBNP (a.a.r. 26-32). Recognize BNP and proBNP in sandwich immunoassay (sensotovoty <1 pg/ml), recommended pairs for sandwich immunoassay (coating - conjugate): 50E1 - 24C5, 50E1 - 26E2; reacts with proBNP and BNP in WB. Can be used for proBNP detection in pairs with anti-NTproBNP MAbs 16F3 or 18H5 (Cat.# 4NT1).