Subject: Science and tech Context: India is using RT-PCR as standard test for COVID. But recently ICMR approved ELISA test kits for Covid-19 developed by two companies. Concept: An ELISA test is of two types depending on the antibodies tested for immunoglobulin G (IgG) and immunoglobulin M (IgM). IgG detects antibodies developed in later stage of infection, […]