Cytomegalovirus Antibody (IgM)

Cytomegalovirus Antibody (IgM)

Test Code

8503
86645
8503
86645
In-home collection may be available in your area for purchase through Quest Mobile.

Clinical Significance

Cytomegalovirus Antibody (IgM) - 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.

Test Resources

Topic Brief

Laboratory Diagnosis of Peripheral Neuropathy

Test Details

Methodology

Immunoassay (IA)

Reference Range(s)

AU/mL Interpretation
<30.00 No antibody detected
30.00-34.99 Equivocal
≥35.00 Antibody detected
Results from any one IgM assay should not be used as a sole determinant of a current or recent infection. Because an IgM test can yield false positive results and low level IgM antibody may persist for more than 12 months post infection, reliance on a single test result could be misleading. Acute infection is best diagnosed by demonstrating the conversion of IgG from negative to positive. If an acute infection is suspected, consider obtaining a new specimen and submit for both IgG and IgM testing in two or more weeks.

Alternative Name(s)

CMV Antibody IgM,Cytomegalovirus IgM Antibody,CMV IgM Ab

LOINC® Codes, Performing Laboratory

Service Area must be determined

Methodology

Immunoassay (IA)

Reference Range(s)

AU/mL Interpretation
<30.00 No antibody detected
30.00-34.99 Equivocal
≥35.00 Antibody detected
Results from any one IgM assay should not be used as a sole determinant of a current or recent infection. Because an IgM test can yield false positive results and low level IgM antibody may persist for more than 12 months post infection, reliance on a single test result could be misleading. Acute infection is best diagnosed by demonstrating the conversion of IgG from negative to positive. If an acute infection is suspected, consider obtaining a new specimen and submit for both IgG and IgM testing in two or more weeks.

Alternative Name(s)

CMV Antibody IgM,Cytomegalovirus IgM Antibody,CMV IgM Ab
Service Area must be determined

Preferred Specimen(s)

1 mL serum

Minimum Volume

0.5 mL

Transport Container

Transport tube

Transport Temperature

Room temperature

Specimen Stability

  • Room temperature: 4 days
  • Refrigerated: 7 days
  • Frozen: 30 days

Reject Criteria

Gross hemolysis • Grossly lipemic • Grossly icteric

Setup Schedule

Service Area must be determined
1 mL serum
0.5 mL
Transport tube
Room temperature
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 30 days
Gross hemolysis • Grossly lipemic • Grossly icteric
Service Area must be determined
In-home collection may be available in your area for purchase through Quest Mobile.
Test Details

Clinical Significance

Test Resources

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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