The quantitative values of plasma NT-proBNP (Table 1, Fig. 2) were significantly (p = 0.0011) different between the N-CHF (median: 144.5 pmol/l; range: 17–552) and CHF cats (median 1698 pmol/l; 459–1942 pmol/l). Here, NPPB is linked to congestive heart failure.