Question

which of the following diagnostic procedures is a blood test?
a holter monitor
b cardiac biomarkers
c cardiac scan
d doppler ultrasound

Explanation:

A Holter monitor records heart - rhythm over time, a cardiac scan uses imaging techniques, and Doppler ultrasound uses sound waves to visualize blood flow. Cardiac biomarkers are measured in a blood sample to detect heart - related damage or disease.

Answer:

B. cardiac biomarkers