Some degree of apprehension or fear is normal and should be expected. This discomfort disappears when the test is completed. You may also feel uncomfortable for a short while if small, enclosed space causes you discomfort. Equipment used Not available. Description of test You or a close relative will be required to sign a consent form after the procedure has been explained to you.
Skin is cleaned with antiseptic.
A radioactive chemical is given orally for the oral radioactive test. For the intravenous test, radioactive chemical is injected into a vein, usually in the arm. You may experience a brief period of flushing and nausea after the injection. Only a small amount of radioisotope is given. It's usually excreted within 24 hours.