What is a PCR test, and how does it work? - Medical News Today
2024年1月29日 · Health experts can use PCR tests as a quick, accurate way to diagnose infectious diseases, spot genetic changes that can cause disease, and identify small amounts of cancer cells.
COVID-19 and PCR Testing - Cleveland Clinic
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.
COVID-19 diagnostic testing - Mayo Clinic
2024年7月18日 · Polymerase chain reaction tests, shortened to PCR tests, are molecular tests. The lab technique used is called reverse transcription polymerase chain reaction, shortened to RT-PCR. You also may see this type of test called an NAAT test, short for nucleic acid amplification test.
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.
Overview of Testing for SARS-CoV-2 | COVID-19 | CDC
2024年8月29日 · Viral tests, including nucleic acid amplification tests (NAATs) and PCR tests, as well as antigen tests, are used as diagnostic tests to detect current infection with SARS-CoV-2, determine the need for prevention measures, and inform a person's medical care.
Understanding the Different Types of COVID-19 Tests
2021年9月15日 · There are currently two primary types of COVID-19 tests being used to test patients for COVID-19: molecular tests (also known as nucleic acid, RNA or PCR tests) and rapid antigen tests.
Testing for COVID-19 | COVID-19 | CDC - Centers for Disease …
2024年8月24日 · Go to a testing location. Visit a community-based testing location, such as a pharmacy or health center near you. These locations may offer NAAT, including PCR, or antigen tests, and provide low- or no-cost testing for everyone, including people without insurance.
PCR vs. rapid COVID-19 test: What’s the difference?
2023年12月14日 · 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 swab. The PCR test takes a sample of ribonucleic acid (RNA) and “amplifies” it with the help of lab technologies.
COVID-19 tests: Different types and when to use them
2022年1月7日 · Polymerase chain reaction (PCR) test nasal swab. What is it? This test looks for the virus' RNA in a patient's sample. A sample is collected by inserting a nasopharyngeal swab into a person's nostril and taking cells from the back of the nose. Some lab tests allow for patients to spit into a tube to get a saliva sample.
Understanding COVID-19 PCR Testing - National Human …
2022年1月18日 · How does COVID-19 PCR testing work? COVID-19 testing uses a modified version of PCR called quantitative polymerase chain reaction (qPCR). This method adds fluorescent dyes to the PCR process to measure the amount of genetic material in a sample.