![]() ![]() On the other hand, PCR tests are likely to detect the virus earlier than RATs. ![]() So it's likely you won't test positive on a RAT until a few days after exposure, but you could still get a false negative result on a RAT even after a few days. Preliminary research on the Omicron outbreak suggests rapid antigen tests (RATs) may not detect COVID-19 until at least two days after someone is exposed to the virus, and the Therapeutic Goods Administration (TGA) says they're not as accurate if you do not have symptoms. How long does it take to test positive after exposure?
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