NT-proBNP is a marker for detecting heart function, with a long half-life and high specificity. Biotime NT-proBNP test kit detects the amount of NT-proBNP in human whole blood, serum and plasma samples.
During heart failure, the heart makes two proteins, called B-type natriuretic peptide (BNP) and N-terminal-pro-BNP (NT-proBNP). Levels of both in the blood go up when heart failure gets worse and go down when it gets better.