Quit-smoking basics
Learning Center
Video: Colonoscopy
See what a doctor sees when you undergo an examination of your colon.
Quitting smoking: 10 ways to resist tobacco cravings
Each time you resist a tobacco craving, you're one step closer to stopping tobacco use for good. Use these tips to fight off cravings.
Glucose challenge test
Know how to prepare for this gestational diabetes screening test.
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.
Quit-smoking products: Boost your chance of success
Many quit-smoking products are available and using one or more can greatly increase your chance of success. Check out your options.
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.
Smokeless tobacco products
Learn the risks of using products such as chewing tobacco, snuff and snus.
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