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CMV IgM

Cytomegalovirus IgM CMV Serology IgM
Serum (SST) Positive/Negative

About this test

Indicates recent primary CMV infection or reactivation. Can persist for months. Paired with IgG avidity for accurate dating of primary infection.

Reference Ranges

Sex Age Range Notes
All All ages See notes Negative is normal in absence of recent infection

Clinical Interpretation

High / Increased
Primary CMV infection, reactivation (in immunocompromised), rarely non-specific cross-reactivity.

Related Tests

CMV IgG
Specimen
Serum (SST)
Reporting Unit
Positive/Negative
Category
🦠 Microbiology

⚠ Clinical Note
Reference ranges are indicative. Always interpret results in the context of the individual patient and local laboratory reference intervals, which may vary.