Lexiscan is a nuclear stress test that uses radioactive tracers to produce images of the heart muscle. The images produced can help your doctor evaluate the blood flow to your heart and detect any areas of abnormal or decreased blood flow. Lexiscan may be used to diagnose or rule out coronary artery disease, assess the severity of coronary artery disease, or determine if you are a candidate for angioplasty or bypass surgery.

Side Effects:

The most common side effects of Lexiscan are:

– headache

– fatigue

– lightheadedness or dizziness

– flushing or redness of the skin

– nausea or vomiting

– shortness of breath.

You should notify your doctor if you experience any of the following serious side effects:

– chest pain

– irregular heartbeat

– difficulty breathing

– fainting or loss of consciousness.

Lexiscan is generally well tolerated, but there is a small risk of serious side effects. You should discuss the risks and benefits of the test with your doctor before having the procedure.


-The usual dose of Lexiscan is 5 mCi (185 MBq).

How to take:

– Lexiscan is injected into a vein through an IV line. The injection should take less than a minute. After the injection, you will need to lie still on your back for about 20 minutes while the tracer is distributed through your body.

How does Lexiscan work?

Lexiscan works by injecting a small amount of radioactive tracer into a vein. The tracer travels through the bloodstream and is taken up by the heart muscle. The tracer emits gamma rays that are detected by a special camera, which produces images of the heart muscle. The images can be used to assess blood flow to the heart and detect areas of abnormal or decreased blood flow. Lexiscan is a non-invasive test that does not require any special preparation.


The images produced by Lexiscan are interpreted by a nuclear medicine physician. The results of the test will be available within 24 hours. Lexiscan is generally considered to be accurate in diagnosing.