Combined point of care nucleic acid and antibody testing for SARS-CoV-2 following emergence of D614G Spike Variant
Publication: Cell Reports Medicine
Petra Mlcochova, Dami Collier, Allyson Ritchie, Sonny M. Assennato, Myra Hosmillo, Neha Goel, Bo Meng, Krishna Chatterjee, Vivien Mendoza, Nigel Temperton, Leo Kiss, Leo C. James, Katarzyna A. Ciazynska, Xiaoli Xiong, John AG. Briggs, James A. Nathan, Federica Mescia, Laura Bergamaschi, Hongyi Zhang, Petros Barmpounakis, Nikos Demeris, Richard Skells, Paul A. Lyons, John Bradley, Steven Baker, Jean Pierre Allain, Kenneth GC. Smith, Rachel Bousfield, Michael Wilson, Dominic Sparkes, Glenn Amoroso, Effrosyni Gkrania-Klotsas, Susie Hardwick, Adrian Boyle, Ian Goodfellow, Ravindra K. Gupta
1 September 2020
Summary
Testing patients for COVID-19 as soon as they arrive at hospital is essential to obtain a diagnosis and to make sure they receive the correct treatment as soon as possible.
In a recent Cambridge study, the use of the SAMBA II test reduced the amount of time patients spent on holding wards. Now Cambridge researchers wanted to go further to create a ‘gold-standard’ method of testing.
The most common form of testing is taking a swab of the nose and throat (known as PCR) to see if the virus is present. However, it can take as long as 14 days for an individual to show symptoms of COVID-19, by which time the virus may have moved from the nose and throat and into the lungs and other tissues and organs, making it harder to detect via a swab test. Another way to detect the virus is looking for antibodies (from blood samples) in individuals.
Cambridge researchers combined the two tests – PCR and the antibody test – to help identify who may have the virus. They found combining both tests was more effective to identify patients who had Covid than those who had just one of the tests. Read the full news story.