Understanding Lab Tests for Congenital CMV Infection
Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Congenital cytomegalovirus (CMV) infection occurs when a pregnant woman becomes infected with CMV for the first time during pregnancy, and the virus passes to the developing fetus. This condition can lead to serious complications in infants, including developmental delays, hearing loss, and vision problems. Early diagnosis through blood testing is crucial for proper medical management.
Recommended Test
Cytomegalovirus (CMV) Antibodies, IgM, Quantitative
This test measures the amount of CMV IgM antibodies in the infant's blood. The presence of these antibodies indicates a recent or active CMV infection that was transmitted from mother to baby during pregnancy. IgM antibodies are the body's first immune response to infection, making this test essential for confirming congenital CMV infection and enabling early intervention to manage potential complications.
2907 reviews
How Blood Tests Diagnose Congenital CMV Infection
Unlike many conditions that require physical examination or imaging for diagnosis, congenital CMV infection can be definitively diagnosed through blood testing. The presence of specific antibodies in an infant's blood provides clear evidence of the infection and helps healthcare providers determine the appropriate treatment and monitoring approach.
Why Early Detection Matters
Early diagnosis of congenital CMV infection through blood testing allows healthcare providers to monitor the infant closely for potential complications and begin appropriate treatments when necessary. This proactive approach can help minimize the long-term effects of the infection and improve outcomes for the child.
Important Considerations
The information here is for educational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider for diagnosis and treatment of congenital CMV infection.
