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What can Covid antibody blood tests tell us about past infection?
Covid image Inset Dr Sivaseelan Source: Getty Images / Dr Sivaseelan
PCR tests and RATs can tell you if you're currently infected with the SARS-CoV-2 virus, which causes COVID-19, but only a blood test can tell you if you've been infected in the past. Dr Thilainayagam Sivaseelan, GP from Sydney explains more
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