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  2. People also ask
    What is a PCR test?
    But what, exactly, is a PCR test? First, “PCR” stands for “polymerase chain reaction” which is a way of amplifying the nucleic acids in your sample. According to the FDA, the polymerase chain reaction converts any virus RNA in your sample into DNA and “amplifies” it by making millions of copies of the DNA which the molecular test can then detect.

    Understanding the Different Types of COVID-19 Tests

    health.clevelandclinic.org
    Can a RT-PCR test confirm a negative antigen test result?
    Depending on the situation, the health care provider may recommend a RT-PCR test to confirm a negative antigen test result. A RT-PCR test called the Flu SC2 Multiplex Assay can detect any of three viruses at the same time: the COVID-19 virus, influenza A and influenza B (flu). Only a single sample is needed to check for all three viruses.

    COVID-19 diagnostic testing - Mayo Clinic

    mayoclinic.org
    What is RT PCR used for?
    It is primarily used to measure the amount of a specific RNA. This is achieved by monitoring the amplification reaction using fluorescence, a technique called real-time PCR or quantitative PCR (qPCR). Confusion can arise because some authors use the acronym RT-PCR to denote real-time PCR.

    Reverse transcription polymerase chain reaction - Wikipedia

    en.wikipedia.org
    How long does a PCR test take?
    PCR is the most reliable and accurate test for detecting active infection. PCR tests typically take hours to perform, but some are faster. Antigen test: This detects bits of proteins on the surface of the virus called antigens. Antigen tests typically take only 15 to 30 minutes.

    COVID-19 and PCR Testing - Cleveland Clinic

    my.clevelandclinic.org
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  3. Mayo Clinic
    https://www.mayoclinic.org/tests-procedures/covid...

    COVID-19 diagnostic testing - Mayo Clinic

    Explore further

    What Are All the Different Kinds of COVID-19 Tests?
    publichealth.jhu.edu
    Which test is best for COVID-19? - Harvard Health
    health.harvard.edu
    What’s the difference between a PCR and antigen COVID …
    umassmed.edu
    Here’s When You Should Take a PCR or a Rapid Antigen …
    healthline.com
    COVID-19 tests: Different types and when to use them
    newsnetwork.mayoclinic…
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  4. CDC
    https://www.cdc.gov/coronavirus/2019-ncov/testing/...

    COVID-19 Testing: What You Need to Know | CDC

  5. CDC
    https://www.cdc.gov/coronavirus/2019-ncov/lab/naats.html

    Nucleic Acid Amplification Tests (NAATs) | CDC

  7. Explore RT‑PCR testing

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