PCR Test for COVID-19: What It Is, How Its Done, What The ...
The polymerase chain reaction (PCR) test for COVID-19 is a molecular test that analyzes your upper respiratory specimen, looking for genetic material (ribonucleic acid or RNA) of SARS-CoV-2, the virus that causes COVID-19.
Polymerase Chain Reaction (PCR) Fact Sheet
2020年8月17日 · Sometimes called "molecular photocopying," the polymerase chain reaction (PCR) is a fast and inexpensive technique used to "amplify" - copy - small segments of DNA. Because significant amounts of a sample of DNA are necessary for molecular and genetic analyses, studies of isolated pieces of DNA are nearly impossible without PCR amplification.
Polymerase Chain Reaction (PCR) - StatPearls - NCBI Bookshelf
2023年3月6日 · The polymerase chain reaction (PCR) is a laboratory nucleic acid amplification technique used to denature and renature short segments of DNA using DNA polymerase I enzyme, an isolate from Thermus aquaticus, known as Taq polymerase.
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 genetic material of a pathogen (disease-causing organism) or abnormal cells in a sample of your blood, saliva, mucus, or tissue.
What is a PCR test, and how does it work? - Medical News Today
2024年1月29日 · A polymerase chain reaction (PCR) test detects genetic material from a pathogen or abnormal cell sample. Ways of collecting samples include a nasal swab, a saliva swab, or...
Understanding COVID-19 PCR Testing - National Human …
2022年1月18日 · Polymerase chain reaction (PCR) is a laboratory technique that uses selective primers to “copy” specific segments of a DNA sequence. COVID-19 PCR tests use primers that match a segment of the virus’s genetic material.
Polymerase chain reaction - Wikipedia
PCR is fundamental to many of the procedures used in genetic testing and research, including analysis of ancient samples of DNA and identification of infectious agents. Using PCR, copies of very small amounts of DNA sequences are exponentially amplified in a series of cycles of temperature changes.