What Is an MIBI Stress Test?

By Staff WriterLast Updated Mar 30, 2020 11:26:04 AM ET

A sestamibi, or MIBI, nuclear stress test is an imaging test done to determine the efficiency of blood flow into the cardiac muscles when the heart is both active and at rest, notes MedlinePlus. The test checks if there is enough oxygen and blood supply to a stressed heart.

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