Cytomegalovirus (CMV) Antibodies, Qualitative, IgM

CPT: 86645
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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.

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

Clinical Information

Special Instructions

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

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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The LOINC® codes are copyright © 1994-2018, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf