How visible does the line on a rapid covid test have to be?
It has to be visible enough to show two lines.
Last updated on 27 Apr 2023
Polymerase chain reaction also known as PCR is a laboratory technique for rapidly producing millions to billions of copies of a specific segment of DNA, which can then be used to detect DNA and RNA.
No, it is not nesscary to get a Covid 19 infection testing every week.
They are quite accurate
WHO, CDC and NHS
Covid 19 RTPCR, SARS- CoV-2
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