Usually, RT-PCR or qPCR based test assay is performed for the diagnostic tests, which seems a little bit time-consuming. On the other hand, some rapid tests based on IgG-IgM interaction have been mentioned, which probably is not a specific test for coronavirus COVID-19. That is why, finding specific biomarkers (like antibody, protein or others) could be a very useful means to produce effective testing kits especially microdevices like lateral flow immunoassay strip or electrochemical sensor (lab on a chip). Can anybody, please, give me specific information or reference regarding this issue?