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Rapid antigen tests strengthen fight against the coronavirus, say experts


NEW DELHI: Delhi has conducted over 9.46 lakh COVID-19
tests till date, with experts attributing the high number to the
tests which started last month.

The experts feel that the
antigen test has changed the script for the national capital due to its affordability, quicker result and its ability to serve as a fast diagnostic tool.

tests started in Delhi from June 18.

The total number of
tests conducted in the national capital stands at 9,46,777 till date, which means 49,830
tests per million.

As many as 17,533
tests have been carried out in the last 24 hours, which include 12,501
tests and 5,032 RT-PCR

Between March 4 and June 4, Delhi conducted 2,36,506 COVID-19
tests. Going by the numbers, it means, that post June 4, the national capital conducted nearly seven lakh

Testing figures have risen since June 18, when the testing began in the city using the
antigen kits.

Delhi has 56 labs — 22 government and 34 private — which are carrying out RT-PCR
tests to detect COVID-19.

Labs across the city and health experts credit the
antigen test for reducing the burden on RT-PCR
tests, helping in quicker identification of cases and reducing the risk of spread of infection.

Dr Sumit Sharma, Dean of Indian Spinal Injuries Centre, said testing has played a significant role in checking the spread of cases.

“Asymptomatic patients are being detected and isolated now, and symptomatic patients are being isolated earlier than previously when testing was limited. Early treatment has reduced the infection,” he opined.

Rattan Gurnani, senior manager operations and corporate, City X-Ray and Scan Clinic, said the government has been very aggressive in testing and is ensuring that
tests are conducted across all the containment zones.

“They have given a target to all the districts, so more the
tests, better the diagnosis and quicker the isolation and results. The number of RT-PCR
tests has gone down from 700-800 earlier to 400 to 500 per day,” he said.

The situation is similar in other labs and facilities.

At the Genestrings lab, 1,000 to 1,200
tests were being conducted on a daily basis before the
antigen test started, but now it has reduced to 200
tests per day.

According to Chetan Kohli, COO, Seeds of Innocence and Genestrings Lab,
tests have also helped the labs process the samples faster.

“Earlier, the time taken to process the samples would be anywhere between 24 and 48 hours but now it is 24 hours,” he said.

Dr Rakesh Pandit, senior Consultant and HOD, internal medicine, Akash Hospital said earlier the medical facility was conducting 90 RT-PCR
tests per day, out of which 25 would test positive.

Now the hospital is conducting 50 to 60
tests per day and only six or seven people are testing positive.

“Earlier the labs were so overloaded. The waiting time was more and there were a limited number of facilities. Then there were constraints like one RT-PCR machine cannot do more than 100
tests. But now more people are being covered,” Pandit said.

The number of
tests being conducted on a daily basis is more than double of the RT-PCR

According to the health bulletin on July 24, 5,328 RT-PCR
tests were conducted within 24 hours, while over 13,000
tests were conducted during the same time.

Talking about the advantages of the
tests, Kohli said the results of the test come within 15-20 minutes, and people are getting easy accessibility to them owing to the government’s efforts and the presence of more than 160 centres where people can avail them free of cost.

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