Cai et al. reported that biotinylated synthetic peptides comprising different parts of SARS-CoV-2 proteins were bound to streptavidin-coated magnetic beads, providing 81.5% sensitivity for COVID-19 IgG and IgM detection in about 30 min.230 Following this, the authors used this method to detect cases of COVID-19 antibodies in RT-qPCR-negative infected asymptomatic patients, highlighting the importance of antibody detection. The gene discussed is CD40LG; the disease is COVID-19.