Overview of
different methods for COVID-19 diagnosis. SARS-CoV-2
can be directly detected in humans using molecular approaches, such
as RT-qPCR, DNA sequencing, RT-LAMP, CRISPR/Cas systems, and sensors.
Imaging tests, including chest computed tomography (CT), have been
widely used as a complementary approach to diagnose COVID-19 patients.
Additionally, human antibodies produced against SARS-CoV-2 antigens
can be detected in blood samples via serological
methods, including enzyme-linked immunosorbent assay (ELISA), chemiluminescence
immunoassay (CLIA), immunofluorescence assay (IFA), and lateral flow
assay (LFA). This figure was created with Biorender.com.