Staying healthy
Learning Center
Palliative care
Learn what to expect with this care approach that offers symptom relief for seriously ill people of any age.
Pap smear
Pap smear is often recommended for cervical cancer screening. Learn how it's done and what abnormal Pap test results might mean.
Polysomnography (sleep study)
Your health care provider may order this test if a sleep disorder such as sleep apnea is suspected. Learn how to prepare and what to expect.
Positron emission tomography scan
Learn how this imaging scan can play an important role in early detection of health problems, such as cancer, heart disease and brain disorders.
Pulmonary valve repair and replacement
A congenital heart defect can cause a leaky or blocked pulmonary valve. Know the symptoms and how it's treated.
Rheumatoid factor
Rheumatoid factor — This blood test can help diagnose autoimmune disorders such as rheumatoid arthritis, Sjogren syndrome and lupus.
Sed rate (erythrocyte sedimentation rate)
Sed rate is a blood test that can reveal inflammatory activity in your body. It's often used to help diagnose conditions affecting your joints or muscles.
Sentinel node biopsy
Learn what to expect during this procedure to remove lymph nodes for testing. The results can show whether cancer has spread.
Stool DNA test
Learn about this noninvasive colon cancer screening test that can detect DNA changes in cells collected from a stool sample.
Stress test
This test gives important information about your heart health. Know how to prepare and what to expect.
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