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A computed tomography (CT) scan is a type of imaging test. It uses X-rays and a computer to make images or slices of the body. A CT scan can make detailed pictures of any part of the body, including the bones, muscles, fat, organs, and blood vessels. They are more detailed than regular X-rays.

This test screens for celiac disease and also helps your doctor monitor your condition if you have this disease.

This blood test screens for exposure to Bartonella henselae, the bacteria that cause cat scratch disease.

This is a urine test to screen for a class of medicines called benzodiazepines. These medicines are sometimes called tranquilizers, sleeping pills, and muscle relaxants.

This test measures the amount of bicarbonate, a form of carbon dioxide, in your blood.

This test measures the amount of carbon dioxide in your blood. Normally, carbon dioxide in your bloodstream causes no problems, but if you have far too much or too little of it, you may have a disease or a medical emergency.

This test measures the level of carbon monoxide in your blood. You may need this test if you have smoke inhalation or symptoms of CO poisoning.

This test measures the levels of cardiac biomarkers in your blood. Some of these markers might show up because you've had a heart attack.

This test measures the levels of catecholamines in your blood. The catecholamine hormones are adrenaline (epinephrine), norepinephrine, and dopamine.