ICMR cancels Wondfo’s test kits; row on prices and efficacy erupts
By the middle of May, more clarity is expected on ELISA (enzyme-linked immunosorbent assay) test that has better sensitivity and is expected to have 95 per cent accuracy as opposed to 60 per cent accuracy of the rapid antibody tests. Another test, using chemiluminescence technology, is also under consideration. The accuracy is expected to be higher, in the range of 99 per cent.
The controversy around the efficacy and pricing of the rapid tests may change the way India now tests for the novel coronavirus. Sources say once the final results on these tests are out, India is likely to include these in the testing protocol for coronavirus disease (Covid-19). An industry source revealed that discussions are on with the government to consider these tests. “Once, the final outcomes on these tests come, in around a month or so, we can start importing these kits if the government approves,” said the source.
By the middle of May, more clarity is expected on ELISA (enzyme-linked immunosorbent assay) test that has better sensitivity and is expected to have 95 per cent accuracy as opposed to 60 per cent accuracy of the rapid antibody tests. Another test, using chemiluminescence technology, is also under consideration. The accuracy is expected to be higher, in the range of 99 per cent.
“ELISA is highly sensitive and specific and is able to detect HIV-1/ HIV-2 and variants. It requires sophisticated equipment, a constant supply of electricity, and skilled technicians. It is not suitable for small laboratories, but for testing large numbers of samples per day, as well as in blood banks or for surveillance studies. The simple or rapid tests are better for emergency testing, and in smaller laboratories with low numbers of tests per day,” the World Health Organization has said on its website…Read More
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