Phenylketonuria (PKU) Test

PKU (Phenylketonuria) Screening

How It Is Done

Your baby's heel is cleaned with alcohol and then the heel is poked with a small needle. Several drops of blood are collected inside circles on a special piece of paper. When enough blood has been collected, a small bandage is put on the site.

For a urine test, a drop of special fluid or a special test strip is put on a diaper with fresh urine.


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

Author: Debby Golonka, MPHLast Updated: February 27, 2008
Medical Review: Michael J. Sexton, MD - Pediatrics
Thomas Emmett Francoeur, MDCM, CSPQ, FRCPC - Pediatrics

© 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

Topic Contents
 Test Overview
 Why It Is Done
 How To Prepare
Arrow PointerHow It Is Done
 How It Feels
 Risks
 Results
 What Affects the Test
 What To Think About
 References
 Credits