Brief Description

The LIAISON XL® CMV IgM assay uses chemiluminescence immunoassay (CLIA) technology on the LIAISON XL® Analyzer for the qualitative determination of IgG antibodies to human cytomegalovirus (hCMV) in human serum. It is intended to be used as an aid in the determination of serological status to CMV. This assay is not FDA-cleared for use in testing (i.e., screening) blood or plasma donors. The performance characteristics of this assay have not been established for cord blood or specimens from neonates, infants, or pre-transplant patients. 

Laboratory Unit


Gold top SST tube, centrifuge

Tiger top SST tube, centrifuge

Specimen Collection


Gold top SST tube, centrifuge

Tiger top SST tube, centrifuge


Serum separated from the clot can be maintained at refrigerated temperature (2-8°C) during transit for no more than two days after collection.  

Serum separated from the clot should be dispensed in aliquots, stored frozen (-20°C or colder) and shipped with dry ice. Pack specimens in compliance with government regulations covering the transportation of etiologic agents.

Acceptable Specimen Type(s)


Test Request

Possible Results

  • Positive
  • Negative
  • Unsatisfactory
  • Equivocal

Reference Range


Unacceptable Conditions

  • Plasma Specimens
  • Missing testing requisition 
  • Missing minimum of 2 patient identifiers
  • Improper labeling
  • Improper storage/transport of specimen
  • No specimen received (empty collection tube).
  • Wrong specimen type
  • Low volume 
  • Specimen damaged, broken, or leaking upon arrival
  • Grossly hemolyzed, icteric or lipemic
  • Specimen containing microbial contamination 
  • Received more than 2 Days after collection

Interfering Substances

Hemolysis, icterus, lipemia, and bacterial contamination

Result Reported

5-7 business days


Download this pdf file. Fee schedule

LOINC/Order Codes

30325-5 (Order code: 15500)