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  2. COVID-19 testing - Wikipedia

    en.wikipedia.org/wiki/COVID-19_testing

    COVID-19 Antigen Rapid Test Kit; the timer is provided by the user. Mucus from nose or throat in a test liquid is placed onto a COVID-19 rapid antigen diagnostic test device. COVID-19 rapid testing in Rwanda. An antigen is the part of a pathogen that elicits an immune response. Antigen tests look for antigen proteins from the viral surface.

  3. Polymerase chain reaction - Wikipedia

    en.wikipedia.org/wiki/Polymerase_chain_reaction

    A strip of eight PCR tubes, each containing a 100 μL reaction mixture Placing a strip of eight PCR tubes into a thermal cycler. The polymerase chain reaction (PCR) is a method widely used to make millions to billions of copies of a specific DNA sample rapidly, allowing scientists to amplify a very small sample of DNA (or a part of it) sufficiently to enable detailed study.

  4. Development of COVID-19 tests - Wikipedia

    en.wikipedia.org/wiki/Development_of_COVID-19_tests

    Public Health England announced a test on the 10th, [13] using a real-time RT-PCR (RdRp gene) assay based on oral swabs. [14] The test detected the presence of any type of coronavirus, including specifically identifying SARS-CoV-2. It was rolled out to twelve laboratories across the United Kingdom on 10 February. [15]

  5. Should You Use an Expired COVID Test? The Answer Might ... - AOL

    www.aol.com/lifestyle/expired-covid-tests-still...

    But if you happen to get a positive test result and you don’t have symptoms of the virus, he suggests waiting a day and testing yourself again—or calling your doctor about getting a PCR test ...

  6. What Really Causes a False Positive COVID-19 Test? Experts ...

    www.aol.com/lifestyle/false-positive-covid-19...

    In the most basic sense, there are four possible outcomes for a COVID-19 test, whether it’s molecular PCR or rapid antigen: true positive, true negative, false positive, and false negative.

  7. Reverse Transcription Loop-mediated Isothermal Amplification

    en.wikipedia.org/wiki/Reverse_Transcription_Loop...

    The RT-LAMP technique is being supported as a cheaper and easier alternative to RT-PCR for the early diagnostics of people that are infectious for COVID-19. [6] There are open access test designs (including the recombinant proteins) which makes it legally possible for anyone to produce a test.

  8. Thermal cycler - Wikipedia

    en.wikipedia.org/wiki/Thermal_cycler

    The thermal cycler (also known as a thermocycler, PCR machine or DNA amplifier) is a laboratory apparatus most commonly used to amplify segments of DNA via the polymerase chain reaction (PCR). [1] Thermal cyclers may also be used in laboratories to facilitate other temperature-sensitive reactions, including restriction enzyme digestion or rapid ...

  9. Some at-home COVID tests have expiration dates changed ... - AOL

    www.aol.com/home-covid-tests-expiration-dates...

    COVID-19 tests and the parts they are made of may degrade, or break down, over time. Because of this, expired test kits could give inaccurate or invalid test results,” the FDA said.