09/06/2026
A nuclear stress test evaluates blood flow to the heart muscle at rest and under stress.
During the test, a small amount of radioactive tracer is used to create images of blood flow to the heart. Stress may be created with exercise or medication, depending on the patient.
This test may be recommended when your provider needs more information about possible reduced blood flow, symptoms with activity, abnormal EKG findings, or coronary artery disease risk.
A nuclear stress test helps answer: Is the heart getting enough blood flow when it is working harder?
At South Florida Heart & Vascular, we use cardiac testing to help guide diagnosis, prevention, and treatment decisions.