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Respiratory syncytial virus (RSV)
This common illness affects the lungs. It can seem like a cold, but may be severe, especially in children. Know the symptoms and treatment.
A1C test
Learn more about the preparation for and results of this common diabetes blood test.
Rheumatoid factor
Rheumatoid factor — This blood test can help diagnose autoimmune disorders such as rheumatoid arthritis, Sjogren syndrome and lupus.
Complete blood count (CBC)
Learn what to expect from having this common blood test, why it's done and how to prepare.
STD testing: What's right for you?
Find out how your risk factors affect the types of tests you'll need for sexually transmitted infections (STIs).
Cancer blood tests: Lab tests used in cancer diagnosis
Blood tests used to help diagnose cancer include CBC and tumor marker tests. Other tests and procedures are needed to confirm a cancer diagnosis.
Doppler ultrasound: What is it used for?
A Doppler ultrasound measures blood flow and pressure in blood vessels.
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.
Sickle cell anemia
Learn about the symptoms, causes and treatment of this inherited blood disorder that, in the United States, is more common among Black people.
Teens and social media use: What's the impact?
Find out how to help limit the negative impact of these popular apps on your teenager.
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