<s>[INST] How is heart failure diagnosed?
 [/INST] Clinical history of the person
Basic blood tests
Echocardiography
Chest X-rays
Blood biomarker test Source: NARAYANA HEALTH . Link: https://www.narayanahealth.org/blog/common-patient-questions-related-to-heart-failure/. Field: Cardiovascular. Disease: Heart Failure </s>