Thallium Stress Test

Overview: A thallium stress test is used to show blood flow to your heart while exercising and while at rest.


A thallium stress test, also called a cardiac or nuclear stress test, shows blood flow into your heart while exercising and at rest. The test can show the size of the chambers of your heart, but it is mainly used to tell how well your coronary arteries supply your heart muscle with blood. It can also show whether your heart muscle is scarred or damaged. This test may be ordered by your doctor if they suspect that your heart is not getting enough blood flow when under stress, if you have chest pain, or if you have had a heart attack. It is not used as a primary way to diagnose HCM.

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UCSF Health. (2018, 18 6). Nuclear stress test. Nuclear stress test. Retrieved October 16, 2020, from


HCMA 6/2021

Thallium Stress Test