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Why do some COVID-19 tests come back with a ‘weak positive’, and why does it matter? – The Conversation AU

A man in the Northern Territory recently received a “weak positive” test result for COVID-19. Understanding how coronavirus tests work shows us why this can hap…

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When we get a test result for a disease like COVID-19, we naturally expect it to be either positive or negative. But the results of these tests are not so black and white.
Polymerase chain reaction, or PCR, is the most common test to detect the presence or absence of SARS-CoV-2, the virus that causes COVID-19.
Recently, a weak positive case of COVID-19 was reported in the Northern Territory.
Lets take a look at why someone might get a weak positive result.
Shouldnt you just be positive or ne…

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