Are there any risks to the test?Stress tests are usually safe. Sometimes exercise or the medicine that increases your heart rate can cause symptoms such as chest pain, dizziness, or nausea. You will be monitored closely throughout the test to reduce your risk of complications or to quickly treat any health problems. The radioactive dye used in a nuclear stress test is safe for most people. In rare cases, it may cause an allergic reaction. Also, a nuclear stress test is not recommended for pregnant women, as the dye might be harmful to an unborn baby.
