Frequently Asked Questions (FAQs)
1. Presence of CMV IgG antibodies indicates past or acute infection. 2. A single IgG titre should not be used for diagnosis of a recent infection. Paired acute and convalescent sera should be tested for sero-conversion, which is indicative of primary infection or reactivation of latent infection. 3. Non-reactive results do not always exclude the possibility of infection. Patients with non-reactive results in suspected early disease cases should be retested after 3 weeks. 4. Rising titre in serial samples for CMV IgG indicates active infection.