Understanding Lab Tests for Cytomegalovirus Infection
Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Cytomegalovirus (CMV) is a common virus that belongs to the herpes family. While many people are infected with CMV at some point in their lives, it often causes no symptoms in healthy individuals. However, CMV can be serious for people with weakened immune systems, pregnant women, and newborns. Blood tests are essential for diagnosing CMV infection and determining infection status.
Recommended Test
Cytomegalovirus (CMV) Antibodies, IgG
This test measures IgG antibodies against CMV in the blood. High levels of CMV IgG antibodies typically indicate a past or recent CMV infection, as the body produces these antibodies as an immune response to the virus. While this usually doesn't cause serious illness in healthy individuals, it can be problematic for immunocompromised patients, making this test valuable for diagnosis and monitoring.
2907 reviews
Diagnosing Cytomegalovirus Infection
Since CMV infections can be asymptomatic or present with non-specific symptoms similar to other viral infections, laboratory testing is crucial for accurate diagnosis. Blood tests can detect antibodies produced by the immune system in response to CMV infection, helping determine whether someone has been exposed to the virus and when the infection occurred.
Who Should Consider CMV Testing
CMV testing is particularly important for immunocompromised individuals, pregnant women, organ transplant recipients, and people with HIV/AIDS. Early detection can help healthcare providers implement appropriate monitoring and treatment strategies to prevent complications.
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.
