Since the outbreak of the Coronavirus end of 2019, it has been of utmost importance to detect as early as possible the virus in the human body. For this reason, a direct test has been developed on the basis of PCR technology, detecting specific genetic material of the virus. For this reason, this test was considered the golden standard until recently. Later also so-called antibody (immunoglobulin (Ig) tests became available, as the body’s innate immune system reacts to a virus by producing antibodies very rapidly within hours, the so- called IgM antibodies. A later reaction is an IgG which remains elevated up to several years. In this presentation the various methods and supplies of the antibody tests will be discussed.