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Medical Tests & Exams

Collecting a Stool Sample for Testing

Stool tests often require a parent to collect a sample of their child’s poop at home. Here's how to do it.

COVID-19 Tests: Which One Is Best?

Two kinds of tests can see if someone is infected with COVID-19: molecular tests (such as PCR) and antigen tests. Find out how they differ and which might be best for you or your family.

COVID-19: Antibody Testing

Antibody testing for COVID-19 involves taking a small blood sample to check for antibodies that the body may have made to fight the virus.

COVID-19: Getting Tested

As coronavirus spreads in communities, parents might wonder if their family should get tested. Here's how health care providers test for it.

COVID-19: Viral Testing

People might want to get tested for COVID-19 for different reasons. Here is what viral testing involves.

CT (CAT) Scan: Abdomen

An abdominal CT scan uses a special X-ray machine to take pictures of the liver, spleen, kidneys, bladder, stomach, intestines, pancreas, and adrenal glands, blood vessels, and lymph nodes.

CT (CAT) Scan: Chest

A chest CT scan uses a special X-ray machine to take pictures of a patient's lungs, heart, blood vessels, airway passages, ribs, and lymph nodes.

CT (CAT) Scan: Head

A CT scan of the head uses a special X-ray machine to take pictures of the brain, skull, and sinuses, as well as blood vessels in the head.

CT (CAT) Scan: Neck

A neck CT scan uses a special X-ray machine to make images of the soft tissues and organs of the neck, including the muscles, throat, tonsils, adenoids, airways, thyroid, and other glands.

CT (CAT) Scans

A CT scan, also called a CAT scan, is a type of imaging test. It uses computers and a rotating X-ray machine to take cross-sectional pictures of the body.