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COVID-19 Testing: Here’s All You Need To Know About Indigenously Developed Coronavirus Paper Strip Test ‘FELUDA’

The FELUDA COVID-19 test which resembles a home pregnancy paper-strip test uses advanced technology to identify and target the genetic material of SARS-CoV-2, the virus that causes COVID-19 in less than one hour

COVID-19 Testing: Here’s All You Need To Know About Indigenously Developed Coronavirus Paper Strip Test ‘FELUDA’
  • FELUDA tests will become available from December 1
  • To be marketed as TataMD CHECK, these tests use gene-based technology
  • This test can deliver a result in 45 minutes

New Delhi: It is a cruel irony that the indigenously developed paper strip COVID-19 test is called Feluda. The powerhouse actor who first brought to life onscreen the fictional detective character of Feluda created by prolific filmmaker Satyajit Ray, Soumitra Chatterjee passed away on November 15 after battling COVID-19 complications. A grim reminder that the pandemic is still around after nearly a year of the first reported cases.

Also Read: India Should Aim At Zero Transmission Of COVID-19 To Healthcare Workers While Handling Samples: Health Experts

With an aim to provide a faster and cheaper diagnosis of COVID-19, Council of Scientific and Industrial Research (CSIR) and Institute of Genomics and Integrative Biology (IGIB) have developed a paper strip test called FNCAS9 Editor-Limited Uniform Detection Assay or FELUDA. According to the developers, the test is a simpler and more accessible alternative to the quantitative RT-PCR (Reverse Transcription Polymerase Chain Reaction) test which is considered as the gold standard in the diagnosis of COVID-19 and more accurate than an antigen test. While the test was launched in Delhi on November 19 by the Tata group in collaboration with the Apollo group of hospitals, the test will be become available in markets in Delhi and other states from December 1 as “TataMD CHECK”.

While talking to NDTV, Dr Debojyoti Chakraborty, senior Scientist and one of the two creators of the paper strip test which has been granted government approval said,

The FELUDA test is a replacement of the RT-PCR test as per the guidelines of Drug Controller General of India (DCGI). It is as accurate as quantitative RT-PCR. One who does this test, does not require to go for a round of RT-PCR test for confirmation after getting FELUDA test done. The reason we started working on this test was to ramp up testing and so that antigen tests can be discouraged. FELUDA can be used easily and is more accurate than antigen test. This test will be much easier to deploy; it will have much more penetration.

Dr. Chakraborty said that currently, the SARS-CoV-2 diagnostic test happens in three ways- the RT-PCR which are highly accurate but require advanced lab machinery, antigen test which is a rapid test that detects virus proteins but it is less sensitive, not accurate and generates a large number of ‘False Negatives’ and lastly, it is antibody test where the body’s response to the virus (antibodies generated) is measured to know if an infection had occurred but it does not tell about the current infection.

Also Read: Lack Of Testing Facilities In Rural Areas Resulted In Underreporting Of COVID-19 Cases: Parliamentary Committee

FELUDA, like other inexpensive paper-based tests being developed in other countries, claims to combine the accuracy of the PCR test with the accessibility of the antigen kits. It is based on the gene-editing technology called Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR). Dr. Chakraborty said,

CRISPR technology is a Nobel Prize winning technology. It uses CRISPR-Cas9 which is protein which can hook on to a sequence on SARS-CoV-2 gene and then it gives a visual result on a paper strip like a pregnancy test. The person taking the test needs to get their throat swab done by the lab technician for the sample. RNA (Ribonucleic acid) will be extracted from the sample for producing the result. This process does not require a real-time quantitative machine needed for RT-PCR which is generally an expensive machine and not easily available.

Step By Step Procedure of FELUDA Paper Strip Test

  1. A sample is taken from the person’s nose or throat
  2. RNA is then isolated from that sample
  3. DNA is made from RNA by putting it in a PCR machine
  4. After this, the protein CRISPR-Cas9 is added
  5. Next, the strip is put and left for two minutes
  6. One line in the strip means that the person is negative while two lines will mean that the person is coronavirus positive.

Also Read: Under Its ‘Health Cannot Wait’ Campaign, NGO Smile Foundation Is Promoting Hygiene And Sanitation Amid COVID-19

While RT-PCT test for COVID-19 conducted by an authorised laboratory in the country takes upto 24 hours to provide the result to the person, FELUDA can deliver the result in only 45 minutes with same accuracy. While talking about the efficiency of the test, Girish Krishnamurthy, CEO and MD, TataMD CHECK said to NDTV,

The test comes with the ability to correctly identify those with the disease called as sensitivity of a test as high as 96 per cent. The specificity or the ability of the test to correctly identify those without the disease is 98 per cent. The time taken from extracting RNA sample in the lab to providing the result to the patient takes only 75 minutes. Only 40-45 minutes are required to diagnose COVID-19 on the extracted RNA and produce a result.

As per Mr. Krishnamurthy, the exact cost of the test will be revealed on December 1 but is expected to be Rs. 500- Rs. 600.

Commenting on the newly launched test, Dr Om Srivastav, Director Infectious Diseases, Jaslok Hospital & Research Centre said that while it is a good test, its impact on fighting the COVID-19 pandemic is yet to be seen. He said,

It is too early to say that the TataMD CHECK based on FELUDA will help control the pandemic. This is something we will know after some days. But it is for sure a good test in principle. It should be opening up newer horizons as far as ramping up of testing in the country is concerned. It given an option to detect the virus in as short time as possible while costing as low as possible. CRISPR technology used by the test can have implications for other infections also. Therefore, it is quite exciting to see how the experience of using this test for COVID-19 comes out to be.

Also Read: COVID Warriors: ‘Stay At Home Unless Absolutely Necessary,’ Says Piyush, A COVID Nurse From Mumbai

NDTV – Dettol Banega Swasth India campaign is an extension of the five-year-old Banega Swachh India initiative helmed by Campaign Ambassador Amitabh Bachchan. It aims to spread awareness about critical health issues facing the country. In wake of the current COVID-19 pandemic, the need for WASH (WaterSanitation and Hygiene) is reaffirmed as handwashing is one of the ways to prevent Coronavirus infection and other diseases. The campaign highlights the importance of nutrition and healthcare for women and children to prevent maternal and child mortality, fight malnutrition, stunting, wasting, anaemia and disease prevention through vaccines. Importance of programmes like Public Distribution System (PDS), Mid-day Meal Scheme, POSHAN Abhiyan and the role of Aganwadis and ASHA workers are also covered. Only a Swachh or clean India where toilets are used and open defecation free (ODF) status achieved as part of the Swachh Bharat Abhiyan launched by Prime Minister Narendra Modi in 2014, can eradicate diseases like diahorrea and become a Swasth or healthy India. The campaign will continue to cover issues like air pollutionwaste managementplastic banmanual scavenging and sanitation workers and menstrual hygiene


Coronavirus has spread to 195 countries. The total confirmed cases worldwide are 23,96,06,768 and 48,82,051 have died; 20,13,42,617 are active cases and 3,33,82,100 have recovered as on October 15, 2021 at 4:15 am.


3,40,37,592 16,862Cases
3,33,82,100 19,391Recovered
4,51,814 379Deaths
In India, there are 3,40,37,592 confirmed cases including 4,51,814 deaths. The number of active cases is 2,03,678 and 3,33,82,100 have recovered as on October 15, 2021 at 2:30 am.

State Details

State Cases Active Recovered Deaths

65,86,280 2,384

33,157 6

64,13,418 2,343

1,39,705 35


48,29,944 9,246

96,421 1,802

47,06,856 10,952

26,667 96


29,82,399 310

9,607 43

29,34,870 347

37,922 6

Tamil Nadu

26,83,396 1,259

15,451 199

26,32,092 1,438

35,853 20

Andhra Pradesh

20,59,122 540

6,588 27

20,38,248 557

14,286 10

Uttar Pradesh

17,10,008 12

135 4

16,86,976 16


West Bengal

15,79,012 530

7,576 81

15,52,491 601

18,945 10


14,39,311 28

337 1

14,13,885 29



10,33,809 521

4,890 38

10,20,645 477

8,274 6


10,05,614 16

203 4

9,91,841 20



9,54,382 8

42 6

9,45,386 2



8,26,244 34

215 20

8,15,943 14


Madhya Pradesh

7,92,669 12

111 1

7,82,035 11



7,71,035 16

105 158


10,049 174


7,26,016 8

42 6

7,16,313 2



6,68,618 168

4,171 40

6,60,512 207

3,935 1


6,05,847 207

3,646 157

5,96,263 362

5,938 2


6,01,971 33

234 11

5,85,199 16

16,538 6


3,48,406 11

130 4

3,43,141 7



3,43,729 28

175 22

3,36,157 6


Jammu And Kashmir

3,30,834 93

935 11

3,25,473 104


Himachal Pradesh

2,21,113 182

1,387 5

2,16,011 173

3,715 4


1,77,356 68

679 27

1,73,342 39

3,335 2


1,27,259 49

647 4

1,24,763 53



1,22,432 69

1,444 15

1,19,099 84



1,10,719 901

13,601 435

96,744 1,332

374 4


84,295 4

110 8

83,369 12



82,734 87

892 31

80,411 115

1,431 3


65,295 10

32 5

64,443 15


Arunachal Pradesh

54,958 4

202 22

54,476 26



31,722 6

224 1

31,108 7



31,516 9

230 8

30,613 17



20,867 6

44 2

20,615 4


Dadra And Nagar Haveli


3 1

10,668 1




2 0



Andaman And Nicobar Islands

7,640 3

10 1

7,501 2


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