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Bengaluru, Apr 28: Karnataka has found that the rapid antibody test kits for COVID-19 that the Centre supplied to the state have only 47% sensitivity. The state will be returning the kits to the Indian Council of Medical Research (ICMR).

Karnataka had received 11,400 rapid antibody test kits from the ICMR a few days back, out of which it had sent around 200 of them to NIMHANS for validation.

After the ICMR, on Monday, sent a circular to all states to return the test kits to the suppliers, Dr CN Manjunath, Director, Jayadeva Institute of Cardiovascular Sciences and Research, and nodal officer for lab testing in the state's COVID-19 task force, said, "We have cancelled the orders we placed to Guangzhou Wondfo Biotech and Zhuhai Livzon Diagnostics for one lakh rapid antibody test kits. Since the ICMR supplied us with 11,400 kits out of the 6.5 lakh kits it procured, we will be returning the kits to them."

Manjunath told said that the validation at NIMHANS revealed the kits to have only 47% sensitivity. Sensitivity is the ability of a test to identify the true-positives in a population, i.e., the actual number of people who've been infected with the disease. With the rapid antibody testing kits being shelved, the state's plan to randomly test high risk groups has taken a backseat. 

So far, the state has tested 43,791 samples. 

Karnataka now has 22 testing facilities -- 14 government and seven private labs. Many private labs have not tested any samples so far because of the lack of test kits (the state has made it clear that it will not provide test kits to private labs). So, getting an ICMR approval for testing has become a moot point.p

Agreeing to the setback the state's plans of ramping up testing has taken, Manjunath said, "It is true that RT-PCR test kits are in shortage. Even Pune's Mylabs had a shortage in supplying test kits. But we are relying on institutes like Kidwai, Narayana Health and Biocon's Syngene that have received approval for testing. They're big institutes and we hope that they will test a large number of samples."

On reports that the Centre has RT-PCR test kits that will last for only a week, he said, "We have test kits that will last for eight to 10 days. We have ordered for more. We are hoping to receive them before the current kits run out."

Bengaluru, Mar 25 : Karnataka recorded its highest single-day tally to date, as 10 people tested positive, taking the total number of cases to 51 in the state.

“Till date 51 COVID-19 positive cases have been confirmed in the state which includes one death and three discharged," the health department said in a statement on Wednesday.

The rise in cases adding to the growing national tally of people who have tested positive for COVID-19.

The daughter of a former union minister from the Bharatiya Janata Party (BJP) from Karnataka has also tested positive.

Bengaluru accounts for 32 of the total 51 cases recorded in the state so far,including three who have fully recovered and released.

Dakshina Kannada has five confirmed cases, Chikkaballapura and Kalaburagi has three cases each, Mysuru has and Uttara Kannada has two cases each and four other districts have one case each.

Prime Minister Narendra Modi has announced a 21-day lockdown of the country to keep people indoors and contain the spread of the virus in the community.

The government has also been trying to scale up testing.

Medical education minister K.Sudhakar on Wednesday told Mint that Karnataka will scale up testing by 10-fold with the help of government and private labs approved by the Indian Council of Medical Research (ICMR).

A total of 2,438 people have been tested in Karnataka and 2242 have tested negative, according to state health department. 214 people are lodged in medical hospitals.