What lab value is typically assessed in heart failure patients?

In heart failure patients, the lab value typically assessed is BNP (B-type Natriuretic Peptide). BNP is a hormone produced by the heart in response to excessive stretching of heart muscle cells, which occurs when the heart is under stress, such as in heart failure. Elevated levels of BNP indicate that the heart is not functioning effectively and can be used to help diagnose heart failure, assess its severity, and monitor treatment efficacy. BNP levels may also help differentiate heart failure from other causes of shortness of breath.

Troponin is more specific for myocardial injury, and while it can be elevated in acute heart failure situations, it is not used primarily to monitor or diagnose chronic heart failure. Creatinine is related to kidney function, which can be affected in heart failure but does not provide direct information about cardiac status. Hemoglobin levels may indicate anemia, which can coexist with heart failure, but they are not routinely used as a marker for heart failure diagnosis or management.