The TORCH IgM Test detects the presence of IgM antibodies against four infections—Toxoplasma, Rubella, Cytomegalovirus (CMV), and Herpes Simplex Virus (HSV)—which can cause birth defects in newborns and illness in adults.
In newborns, the presence of IgM antibodies indicates a high likelihood of an active infection with the organism. Since IgM antibodies produced by the mother cannot cross the placenta, their presence in the infant strongly suggests that the baby has an ongoing infection. Conversely, if the infant has IgG antibodies but no IgM antibodies, it typically reflects the passive transfer of maternal antibodies and does not indicate an active infection in the baby.
In pregnant women, the presence of IgM antibodies suggests a recent or new infection with the virus or parasite. This could pose a risk to both the mother and the fetus, especially if the infection occurs early in pregnancy.
This test is crucial for identifying active infections that may require medical intervention to protect both maternal and fetal health.