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CMV IgM
MessageWALTER REED
Test Code
WR11
Alias/See Also
"096727
CMV IGM ANTIBODIES
13074
CMV"
CMV IGM ANTIBODIES
13074
CMV"
Preferred Specimen
Serum
Transport Container
RED SST/GEL
Transport Temperature
Frozen
Specimen Stability
Frozen
Limitations
"Results from any one IgM assay should not be used as a sole determinant of a current or recent infection.
Because IgM tests can yield false positive results and low levels of IgM antibody may persist for more than 12 months post infection, reliance on a single test result could be misleading. If an acute infection is suspected, consider obtaining a new specimen and submit for both IgG and IgM testing in two or more weeks."
Because IgM tests can yield false positive results and low levels of IgM antibody may persist for more than 12 months post infection, reliance on a single test result could be misleading. If an acute infection is suspected, consider obtaining a new specimen and submit for both IgG and IgM testing in two or more weeks."
Reference Range
"Negative 0.0 - 0.8 index
Equivocal 0.9 - 1.0 index Positive > 1.0 index"
Equivocal 0.9 - 1.0 index Positive > 1.0 index"
Clinical Significance
"Diagnosis of infections of the central nervous system is accomplished by
demonstrating the presence of intrathecally-produced specific antibody.
Interpretation of results may be complicated by low antibody levels found in
CSF, passive transfer of antibody from blood, and contamination via bloody
taps. The interpretation of CSF results must consider CSF-serum antibody
ratios to the infectious agent. The intrathecal synthesis of CMV antibody is
most accurately measured by performing the Antibody Index for CNS Infection"
demonstrating the presence of intrathecally-produced specific antibody.
Interpretation of results may be complicated by low antibody levels found in
CSF, passive transfer of antibody from blood, and contamination via bloody
taps. The interpretation of CSF results must consider CSF-serum antibody
ratios to the infectious agent. The intrathecal synthesis of CMV antibody is
most accurately measured by performing the Antibody Index for CNS Infection"
