Fig. 1From: Assessment of a bedside test for N-terminal pro B-type natriuretic peptide (NT-proBNP) to differentiate cardiac from non-cardiac causes of pleural effusion in catsQuantitative NT-proBNP values in diluted pleural effusion. There was a significant difference (p = 0.0011) between the N-CHF and CHF cats. N-CHF = cats without congestive heart failure; CHF = cats with congestive heart failure. The dashed line represents the calculated best cut-off of 229 pmol/l. The dotted line represents the transition point of the POC-ELISA of 200 pmol/lBack to article page