PCR Test: What It Is, How It Works & Results - Cleveland Clinic
Jan 16, 2025 · A PCR (polymerase chain reaction) test is a lab technique that amplifies (creates more copies) of genetic material (DNA). Healthcare providers can use PCR to test for infectious diseases, …
PCR Tests: MedlinePlus Medical Test
PCR (polymerase chain reaction) tests are a reliable and accurate way to diagnose certain infectious diseases, some types of cancer, and certain genetic changes. The tests check for small amounts of …
What is a PCR test, and how does it work? - Medical News Today
Jan 29, 2024 · What is a polymerase chain reaction (PCR) test? Here, we describe how the tests work and why health experts and researchers use them.
Polymerase chain reaction - Wikipedia
PCR is an important testing tool that can detect sequences within the gene for the pertussis toxin. Because PCR has a high sensitivity for the toxin and a rapid turnaround time, it is very efficient for …
PCR vs. rapid COVID-19 test: What’s the difference?
May 9, 2025 · There are two types of COVID-19 tests: the polymerase chain reaction (PCR) test and the antigen test, known as the rapid test. Both tests require a sample from the patient, usually a nasal …
Polymerase chain reaction (PCR) | Definition, Steps, Applications ...
Dec 31, 2025 · polymerase chain reaction (PCR), a technique used to make numerous copies of a specific segment of DNA quickly and accurately.
Polymerase Chain Reaction (PCR) Test - eMedicineHealth
Polymerase chain reaction (PCR) is a chemical reaction harnessed to detect and identify trace bits of DNA, whether from a virus or bacteria to study the organism or diagnose an infection, or for forensic …
Polymerase Chain Reaction (PCR): Steps in This DNA Test
PCR (polymerase chain reaction) is a method to analyze a short sequence of DNA (or RNA) even in samples containing only minute quantities of DNA or RNA. PCR is used to reproduce (amplify) …
Polymerase Chain Reaction (PCR) Fact Sheet
Aug 17, 2020 · To amplify a segment of DNA using PCR, the sample is first heated so the DNA denatures, or separates into two pieces of single-stranded DNA. Next, an enzyme called "Taq …
Comprehensive Guide to PCR Testing: Accuracy, Cost & Benefits
Discover the benefits of PCR testing for diagnosing infections like COVID-19, flu, and more. Learn how it works, its accuracy, and where to find a PCR test near you.