Cytomegalovirus Antibody (IgM)

Test Code
8503

CPT Codes
86645

Preferred Specimen
1 mL serum

Minimum Volume
0.3 mL

Transport Container
Plastic screw-cap vial

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 4 days

Refrigerated: 7 days

Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Plasma • Cord blood

Methodology
Immunoassay (IA)

Setup Schedule
Set up: Mon-Fri a.m.; Report available: Next day

Limitations
False-positive IgM test results may be due to the presence of heterophile antibodies or presence of rheumatoid factor.

Reference Range
≤0.8 No antibody detected
0.9-1.0 Equivocal
≥1.1 Antibody detected


Clinical Significance
CMV infections are common and usually asymptomatic. In patients who are immunocompromised, CMV may cause disseminated, severe disease. CMV may cause birth defects in a minority of infected newborns.

Performed By
Quest Diagnostics Nichols Institute



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.