As for the antibody test, also known as serology tests, MOH recommended the usage of serology rapid test kits (RTK) that are validated by Institute of Medical Research (IMR) or the National Public Health Laboratory (NPHL). The rapid antibody tests recommended are Lionrun Shanghai Liangrun Diagnostics Kit, Wondfo, Vazyme, Standard Q Covid-19 igM/IgG Combo, and Healgen.