COVID-19 rapid tests are now widely available in New Hampshire, but some of these test kits warn that a negative result may not mean a test-taker doesn’t have COVID. How should someone taking a test ...

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A flawed coronavirus test distributed by government scientists early in the pandemic was poorly designed and came with erroneous instructions that made it doubly difficult for labs to rely on the test ...

Abbott Laboratories ABT0.10%increase; green up pointing triangle said Thursday that it would change the instructions for using its fast coronavirus test for a second time, days after a preliminary ...

A false positive result is possible with a rapid COVID-19 test. It happens when a person does not have COVID-19 but still tests positive for the disease. People can use a rapid COVID-19 test at home ...