Staying healthy
Learning Center
7 signs and symptoms not to ignore
Do your symptoms merit medical attention? From weight loss to flashes of light, know when to seek care.
A1C test
Learn more about the preparation for and results of this common diabetes blood test.
ANA test
An antinuclear antibody (ANA) test is one test used to help determine if you have an autoimmune disease such as lupus.
Asthma: Steps in testing and diagnosis
Think you or your child might have asthma? Here's what's involved in making a diagnosis.
Atypical cells: Are they cancer?
Atypical cells appear abnormal, but they aren't necessarily cancerous.
BRCA gene test for breast and ovarian cancer risk
Find out what to expect if you're considering a blood test to determine if you have an increased risk of breast cancer. Learn what your results might mean.
Baby naps: Daytime sleep tips
Know when and how long babies need to nap, how to put them down for naps and how to handle fussiness.
Barium enema
Find out how to prepare and what to expect if your doctor has recommended a barium enema.
Bilirubin test
Find out what to expect from a bilirubin test — an important blood test that determines how your liver is functioning.
Biopsy: Types of biopsy procedures used to diagnose cancer
Learn about the different ways of collecting suspicious cells to test in the lab to diagnose cancer.
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