How trust worthy is antigen testing being done for coronavirus

Antigen tests may not be as effective, as more than half of those who received negative symptoms for covid-19 in the symptomatic (antagonistic) antigen test were subsequently RT-PCR The result was positive in the test. The high rate of negative negative results in rapid antigen test in Mumbai raises questions about their effectiveness. These test kits are being used by the Brihanmumbai Municipal Corporation (BMC) under 'Mission Universal Testing' for everyone.