Diagnostic Testing A-Z

  • Female physician with hand on patient's shoulder.

    Prepare to Get the Most Out of Your Doctor Visit

    When you hear, “The doctor will see you now,” be sure to make the most of every second.

  • How To Request a Test

    How to Request a Test

    When you visit your physician or other healthcare professional, go prepared. You may have heard about a new medical study, a new medication or a new laboratory test that might be right for you.

  • woman adjusting her bicycle helmet

    What is the ColoVantage® Blood Test?

    Your doctor can order ColoVantage® as part of routine blood testing. The convenient test doesn’t require you to avoid certain foods or involve any advance preparation. But it can aid in the detection of colorectal cancer.

  • Woman laughing

    What Is Fasting and Do I Need to Fast?

    When your healthcare provider orders certain tests, you may be told to fast for several hours before the test or overnight. Here’s what you need to know to comply with your doctor’s instructions.

Explore "The 9 Visual Rules of Wellness"

Rule #1 is baseline your health.  Learn more from

Learn About a Test

Learn about various tests at, a public resource on clinical lab testing.

Browse By

or or

Popular and Featured Tests