Pregnancy symptoms
Learning Center
COVID-19 antibody testing
Learn how COVID-19 antibody testing is done to find out if you've had a past infection with SARS-CoV-2, the virus that causes coronavirus disease 2019.
Urinalysis
This common lab test checks urine for signs of disease and for clues about overall health.
Circumcision (male)
Learn about the benefits and risks of surgery to remove the skin that covers the tip of the penis.
Minimally invasive heart surgery
Learn more about this surgery that uses small incisions in the chest as an option to open-heart surgery.
Ileoanal anastomosis (J-pouch) surgery
This surgery removes the large intestine. It's often done to treat ulcerative colitis and other bowel conditions.
Intraoperative magnetic resonance imaging (iMRI)
Find out how neurosurgeons use intraoperative magnetic resonance imaging (iMRI) during brain surgery.
Lumbar puncture (spinal tap)
Learn about lumbar puncture, which removes a sample of cerebrospinal fluid to find infections, bleeding and other conditions. It also is called a spinal tap.
Allergy skin tests
Considering skin testing for your allergies? Learn about the risks, results and what to expect during testing.
Cochlear implants
This electronic device improves hearing in people who have severe hearing loss from inner ear damage.
Aortic valve repair and aortic valve replacement
These types of heart valve surgeries are done to treat aortic valve disease, including aortic stenosis and aortic regurgitation.
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