TORCH refers to a group of blood tests that check for several different infections in a newborn. The full form of TORCH is toxoplasmosis, rubella, cytomegalovirus, herpes simplex, and HIV. The test evaluates antibody levels (IgG and IgM) against these infections. It can indicate past or recent infection with Toxoplasma gondii, cytomegalovirus, or herpes simplex virus. If performed for a newborn, positive results may indicate current or recent infection in the baby.