Antibody penta is also known medically as TORCH penta, TORCH refers to pathogens that can cause congenital intrauterine and perinatal infections that result in perinatal malformations. It is an acronym for a group of pathogenic microorganisms. Where T is for Toxoplasma gondii, O is for other pathogenic microorganisms, R is for Rubella virus, C is for Cytomegalovirus, and H is for Herpes Simplex Virus type I and II. So this quintet of antibodies includes toxoplasmosis antibodies, rubella virus antibodies, cytomegalovirus antibodies, and herpes simplex virus types I and II antibodies. It is best to have a screening test before pregnancy to help pregnant women avoid contracting these diseases during pregnancy, which can lead to malformations in the fetus.