b-type natriuretic peptide is also known as brain natriuretic peptide (BNP). If its value is high, it may be related to non-disease factors or disease factors, and it is recommended to undergo further examination to determine the cause. 1. Non-disease factors: mainly false positives, i.e. there is no corresponding disease in the body, but due to the interference of heterophilic antibodies in the serum, the test results appear false positive. 2. Disease factors (1) Cardiovascular diseases: such as heart failure, left ventricular insufficiency, acute coronary syndrome, essential hypertension, etc., will lead to BNP elevation. (2) Respiratory diseases: such as pulmonary embolism, pulmonary heart disease, etc. (3) Other diseases: including some kidney diseases, liver diseases, etc., which may also lead to increased BNP values. It is recommended that people with elevated BNP values should undergo further examination of cardiac markers, electrocardiogram, chest X-ray, etc., to clarify the corresponding causes and undergo active treatment.