PCR

British  

abbreviation

1. polymerase chain reaction: a technique for rapidly producing many copies of a fragment of DNA for diagnostic or research purposes

---

PCR Cultural  

1. A laboratory technique that can amplify the amount of DNA from a tiny sample to a large amount within just a few hours. Theoretically, PCR can take one molecule and produce measurable amounts of identical DNA in a short period of time. It is used in DNA fingerprinting and DNA sequencing.

---

Discover More

An enzyme used in this process was originally found in bacteria in hot springs.

Example Sentences

If that test is positive, a follow-up PCR test checks for viral RNA to confirm an active infection.

From Science Daily • Dec. 11, 2025

Mr Curnow said Wild Child had ceased working with PCR laboratories and had submitted its formulas for testing with other accredited, independent laboratories.

From BBC • Sep. 30, 2025

At-home tests should still work to detect this variant, but PCR tests that doctors can order are more accurate.

From Salon • Jun. 11, 2025

The new PCR test enables the detection of the mpox DNA taken from skin lesion swabs.

From BBC • Oct. 4, 2024

In August 1971 the editor of a leading literary journal, who was also a member of the PCR Central Committee, resigned both positions as a protest against the stricter party controls.

From Area Handbook for Romania by Bernier, Donald W.