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  1. my.clevelandclinic.org › health › diagnosticsCOVID-19 and PCR Testing - Cleveland Clinic

    24 de ago. de 2021 · 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. Scientists use the PCR technology to amplify small amounts of RNA from specimens into deoxyribonucleic acid (DNA ...

  2. www.ncbi.nlm.nih.gov › books › NBK589663Polymerase Chain Reaction (PCR) - StatPearls - NCBI Bookshelf

    6 de mar. de 2023 · The polymerase chain reaction is a nucleic acid amplification testing procedure that consists of denaturing, renaturing, elongating, and amplifying a short segment of DNA or RNA. This is implemented by incorporating DNA I polymerase, which is derived from Thermus aquaticus, also known as Taq polymerase.

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  4. medlineplus.gov › spanish › pruebas-de-laboratorioPruebas de PCR: Prueba de laboratorio de MedlinePlus

    ¿Qué son las pruebas de PCR? Las pruebas de PCR (reacción en cadena de la polimerasa) son una forma rápida y muy precisa de diagnosticar ciertas enfermedades infecciosas y cambios genéticos. Las pruebas detectan el ADN o el ARN de un patógeno (el organismo que causa una enfermedad) o células anormales en una muestra.

  5. www.medicalnewstoday.com › articles › what-is-pcr-testWhat is a PCR test, and how does it work? - Medical News Today

    28 de feb. de 2022 · 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...

  6. medlineplus.gov › lab-tests › pcr-testsPCR Tests: MedlinePlus Medical Test

    What are PCR tests? PCR (polymerase chain reaction) tests are a fast, highly accurate way to diagnose certain infectious diseases and genetic changes. The tests work by finding the DNA or RNA of a pathogen (disease-causing organism) or abnormal cells in a sample.

  7. www.mayoclinic.org › tests-procedures › covid-19-diagnostic-testCOVID-19 diagnostic testing - Mayo Clinic

    RT-PCR test. Also called a molecular test, this COVID-19 test detects genetic material of the virus using a lab technique called reverse transcription polymerase chain reaction (RT-PCR). A health care professional collects a fluid sample by inserting a long nasal swab (nasopharyngeal swab) into your nostril and taking fluid from the back of ...

  8. www.genome.gov › about-genomics › fact-sheetsUnderstanding COVID-19 PCR Testing - National Human Genome...

    18 de ene. de 2022 · 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. This allows many copies of that material to be made, which can be used to detect whether or not the virus is ...