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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).
Rheumatoid factor
Rheumatoid factor — This blood test can help diagnose autoimmune disorders such as rheumatoid arthritis, Sjogren syndrome and lupus.
Primary sclerosing cholangitis
Liver damage can result from this potentially serious disease in which scarring blocks the bile ducts. A liver transplant is the only known cure.
Primary biliary cholangitis
Primary biliary cholangitis is a type of liver disease that damages the bile ducts. Early recognition and treatment may help prevent complications.
Prenatal care: 1st trimester visits
Prenatal care can help ensure a healthy pregnancy. Here's an overview of first trimester visits.
Porphyria
This group of disorders results from a buildup of natural chemicals in the body that affect the nervous system and skin. Learn how to avoid symptom triggers.
Piercings: How to prevent complications
Piercings are popular, but the risks are real. Know how to prevent an infection.
Peripheral neuropathy
Learn what may cause the prickling, tingling or numb sensations of nerve damage and how to prevent and treat this painful disorder.
Performance-enhancing drugs: Know the risks
Learn about the health risks of doping in athletes.
Penicillin allergy
Understand the importance of an accurate diagnosis for penicillin allergy and the best practices for antibiotic treatment options.
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