Rapid tests can be used in temporary screening to detect the Coronavirus strain COVID-19.
COVID-19 IgM/IgG instant test is used for qualitative detection of the IgM and IgG antibodies of COVID-19 in human serum/plasma or whole blood. Tests typically take 2-15 minutes to complete. Although they’re essentially the same as home pregnancy kits, it is advised all test to be conducted by a licensed phlebotomist, medical practitioner or professionals.
Detection Window IgM: Symptomatic 3-5 days, Asymptomatic 7 days.
Such method is European-CE approved, and the U.S. Food and Drug Administration (FDA) is reviewing more rapid tests that can be used in temporary screening to detect the Coronavirus strain COVID-19.
So far, the more accurate frontline response to the COVID-19 outbreak has been polymerase chain reaction (PCR) testing. PCR is the gold standard for diagnosing an infectious agent, and it has the advantage that the primers needed for such tests can be produced with relative speed as soon as the viral sequence is known. The first quantitative reverse-transcriptase-based PCR (RT-PCR) tests, for detecting SARS-CoV2 (COVID-19) were designed and distributed in January by the World Health Organization (WHO), soon after the virus was identified. The test protocol is complex and expensive, however, and is mainly suited to large, centralized diagnostic laboratories. Tests typically take 4–6 hours to complete, but the logistical requirement to ship clinical samples means the turnaround time is 24 hours at best. Speedy real-time reverse-transcriptase-based PCR (rRT-PCR) is current in use in many countries.
As evidence in the success of China, Taiwan, Hong Kong, South Korea, and Singapore, there is no quick fix nor perfect solutions facing COVID-19 outbreak. The combination of both methods were carried for both speedy mass screening and accurate frontline response to ease medical supply shortage, hospital and human resource constrain under abnormal (pandemic) conditions.
All Covid-19 Instant Rapid Test Kit, Covid-19 quantitative RT-PCR or RT-qPCR machines, reagents and test kit are only for professional use only.
Covid-19 Antibody Test Kit (IgM/IgG) or ‘dot blot test’ has its disadvantages.
“The rapid kit looks for antibodies in the blood produced in response to infection by coronavirus, whereas the RT-PCR looks for the virus itself (through RNA extraction) in respiratory specimens.
Since the rapid test relies on the presence of a sufficient amount of antibodies in the blood, factors like timing of the test, previous infections, immune status of a person, cross-reaction with other antigens, can produce false results. “
– Dr Md Shajedur Rahman Shawon, researcher at Centre for Big Data Research in Health, University of New South Wales in Australia