Skip to content

    Font Size
    A
    A
    A

    Why It Is Done

    Lab tests are generally done for one of the following reasons:

    • To find the cause of symptoms
    • To confirm a diagnosis
    • To screen for a disease. Screening tests are often done for people of a specific age or those who have a high risk for a specific disease.
    • To help rule out a disease or condition
    • To assess the severity of a disease
    • To monitor the progression of a disease, how well an organ is working, or if treatment is helping
    • To verify specific events (for example, DNA testing after a rape, or urine testing to look for drug use)

    Many conditions can change your lab results. Your doctor will talk with you about any abnormal results as they relate to you.

    Recommended Related to Health A-Z

    The Good Doctor

    By Meryl Davids Landau New research can help you pick a physician who's right for you. Many of us begin our search for a new doctor by asking friends and relatives. That's OK -- for a start. But keep in mind that it's not like asking for a restaurant recommendation. There's no way ordinary people can judge a physician's clinical skills. By the same token, patients may put too much emphasis on personality. In a 2006 study at UCLA, many doctors who received high praise from patients...

    Read the The Good Doctor article > >

    1

    WebMD Medical Reference from Healthwise

    Last Updated: September 09, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

    Hot Topics

    WebMD Video: Now Playing

    Click here to wach video: Dirty Truth About Hand Washing

    Which sex is the worst about washing up? Why is it so important? We’ve got the dirty truth on how and when to wash your hands.

    Click here to watch video: Dirty Truth About Hand Washing

    Popular Slideshows & Tools on WebMD

    disciplining a boy
    Types, symptoms, causes.
    fruit drinks
    Eat these to think better.
    embarrassed woman
    Do you feel guilty after eating?
    diabetes highlighted
    4 early warning signs.
    handful of vegetables and vitamins
    Diet tips and mistakes.
    birth control pills
    Which kind is right for you?
    Remember your finger
    Are you getting more forgetful?
    sticky notes on face
    10 tips to clear your brain fog.
    Close up of eye
    12 reasons you're distracted.
    Trainer demonstrating exercise for RA
    Exercises for your joints.
    apple slices with peanut butter
    What goes best with workouts?
    woman having a good day
    Revitalize your life.

    Women's Health Newsletter

    Find out what women really need.