Understanding Lab Test Results

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 health professional will talk with you about any abnormal results as they relate to you.


Go to previous sectionGo to previous sectionGo to top of pageGo to top of pageGo to next sectionGo to next section

Author: Maria G. Essig, MS, ELSLast Updated: July 9, 2007
Medical Review: Patrice Burgess, MD - Family Medicine
Adam Husney, MD - Family Medicine

© 1995-2008 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
This information does not replace the advice of a doctor. Healthwise disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.

Click here to learn about Healthwise
Click here to learn about Healthwise
Topic Contents
 Overview
Arrow PointerWhy It Is Done
 Results
 Home Test Kits
 What Affects the Test
 Other Places To Get Help
 Related Information
 References
 Credits