Now we have access to PCR tests and rapid antigen tests, which you can use at home. So which test should you use? And what's the difference?
A PCR is the test of choice in these situations because it is more accurate at diagnosing an infection.are planning to have contact with someone at high risk from COVID , and you want to protect themare going to an event where lots of people will be mixing, particularly if it's being held indoors where theare part of a regular COVID surveillance program .
The rapid antigen test is considered to be a screening tool. In other words, it can indicate that you might be infected, but a PCR test is needed to confirm the result. While a negative rapid antigen test result is not a guarantee that you aren't infected, it does provide more protection for your contacts than not testing.It depends on the reason you are taking the test. If you're part of a surveillance program, take the test when you are asked to.over a week can help improve test sensitivity because viral load waxes and wanes. Test sensitivity will be highest when the viral load is at its peak.
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