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Learning Center
Bone density test
If your doctor suspects you have osteoporosis, a bone density test can assess your bone strength. Learn about the risks and results of this procedure.
Blood pressure chart: What your reading means
Checking your blood pressure helps you avoid health problems. Learn more about what your numbers mean.
Blood in semen
Finding blood in your semen can be alarming, but the cause is usually benign. Find out possible causes and when to see a doctor.
Blood glucose monitors: What factors affect accuracy?
Consider these factors when measuring blood sugar levels with blood glucose monitors.
Bladder outlet obstruction: Causes in men?
Find out more about the causes of male bladder outlet obstruction and possible next steps.
Bladder infection in men
Although women are more likely to get bladder infections, men can get them, too. Learn about signs and symptoms and what could put you at risk.
Bipolar disorder in children: Is it possible?
Bipolar disorder in children and teenagers is possible. Finding it early and treating it can help.
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.
Bilirubin test
Find out what to expect from a bilirubin test — an important blood test that determines how your liver is functioning.
Bent penis
Learn what can cause a curved erection and when you may need to see a health care provider.
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