TORCH PANEL, IGG & IGM

TORCH Panel, IgG & IgM

What it is

The TORCH Panel, IgG & IgM is a blood test that detects both IgG and IgM antibodies against a group of infections called TORCH. These include Toxoplasmosis, Other infections (such as syphilis, varicella, parvovirus B19), Rubella, Cytomegalovirus (CMV), and Herpes simplex virus (HSV). Measuring both IgG and IgM provides a complete picture of whether an infection is recent, past, or if immunity is present.

Uses

This combined test is especially important in pregnancy to evaluate risks to the unborn baby. It helps detect recent infections (IgM), confirm past exposure or immunity (IgG), and guide preventive or therapeutic interventions. It is also used in newborns with suspected congenital infections and in patients with unexplained recurrent miscarriages or pregnancy complications.

Symptoms That May Lead to the Test

Doctors may order this test for pregnant women with fever, rash, swollen lymph nodes, or flu-like symptoms. It may also be recommended for newborns showing developmental delays, jaundice, low birth weight, seizures, or vision and hearing problems.

Abnormal Results

Positive IgM: Indicates a recent or active infection with one of the TORCH organisms. Further confirmatory testing may be needed to avoid false positives.

Positive IgG: Suggests past infection or immunity. For example, positive rubella IgG means the individual is immune.

Negative IgG and IgM: Indicates no evidence of past or present infection, leaving the individual susceptible to future infection.

Risks

The TORCH Panel, IgG & IgM is a routine blood test with minimal risks. Possible side effects include mild pain, slight bruising, or bleeding at the puncture site, and rarely dizziness or infection.