« Previous Page
Polymerase chain reaction (PCR) is a type of test that can identify specific types of genetic material (DNA) in a small sample.
PCR is useful for many purposes, such as for:
PCR works by taking a small sample containing DNA and using an enzyme called a polymerase to make many copies of that DNA. The process of copying the DNA is done in cycles that are repeated up to 30 times or more. Millions or even billions of copies of the DNA may be made during PCR.
Current as of: January 26, 2020
E. Gregory Thompson MD - Internal Medicine & Adam Husney MD - Family Medicine & Elizabeth T. Russo MD - Internal Medicine
To learn more about Healthwise, visit Healthwise.org.
© 1995-2020 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.