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Cytomegalovirus (CMV) Antibodies, Qualitative, IgM

CPT: 86645
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Special Instructions

Acute and convalescent specimens must be submitted on separate request forms.


Expected Turnaround Time

1 - 2 days


Related Documents


Specimen Requirements


Specimen

Serum


Volume

0.5 mL


Minimum Volume

0.2 mL


Container

Red-top tube or gel-barrier tube


Storage Instructions

Room temperature


Stability Requirements

Temperature

Period

Room temperature

14 days

Refrigerated

14 days

Frozen

14 days

Freeze/thaw cycles

Stable x4


Causes for Rejection

Hemolysis; lipemia; gross bacterial contamination; grossly icteric; visible particulate matter


Test Details


Use

Aid in the diagnosis of acute primary infection


Limitations

IgM responses may persist for weeks to months postinfection. Low levels of IgM may be detectable during reactivation of infection. This test is intended for qualitative determination only. The numeric value of the final result above the cutoff is not indicative of the amount of CMV IgM antibody present.


Methodology

Chemiluminescent immunoassay (CLIA)


Reference Interval

Negative: <30.0 AU/mL

The equivocal sample should be retested. In case the result remains in this range after repeat testing, a second sample should be collected.


LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
096727 Cytomegalovirus (CMV) Ab, IgM 5126-8 096730 Cytomegalovirus (CMV) Ab, IgM AU/mL 5126-8

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