Fertility
Learning Center
Dense breast tissue: What it means to have dense breasts
Find out what it means if your mammogram report says you have dense breast tissue. Learn about additional breast cancer screening tests to consider.
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
Cystoscopy
During cystoscopy, your doctor examines the inside of your bladder using a special instrument that's inserted into the bladder through the urethra.
Cryotherapy for prostate cancer
Find out how very cold temperatures are used to freeze tissue and treat prostate cancer. Learn about the side effects and potential benefits of cryotherapy.
Coronary calcium scan
This heart CT test can show calcium deposits in the blood vessels. Know how the findings relate to your heart disease risk.
Coronary angiogram
Learn more about this heart disease test that uses X-ray imaging to see the heart's blood vessels.
Complete blood count (CBC)
Learn what to expect from having this common blood test, why it's done and how to prepare.
Circumcision (male)
Learn about the benefits and risks of surgery to remove the skin that covers the tip of the penis.
Cholesterol test kits: Are they accurate?
Home cholesterol test kits are often as accurate as the test a health care professional uses, but the quality of results can depend on how well you follow the directions for the test.
Cholesterol test
Measuring the amount of cholesterol and triglycerides in your blood can help predict your risk of blocked arteries in your heart and brain.
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