Rapid antigen tests creates suspicions with high percentage of false negatives

Mumbai: A high percentage of the negative results in antigen tests for Covid-19 are turning out to be positive in RT-PCR testing.

Findings from two civic laboratories in Maharashtra reveal that antigen tests may not be as effective, as more than half of the symptomatic patient who tested negative for Covid-19 in an antigen test later came positive with the RT-PCR test.

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At Kasturba hospital, 65 per cent of the 43 patients tested positive in the same process. Since July, the BMC has conducted around 8,872 antigen tests in which 1,152 tested positive

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Those symptomatic patients who were negative were again tested and subsequently 60-65 per cent of them tested positive. According to experts, antigen tests are better at determining people without the disease.

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