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Epic Code LAB8610 Cytomegalovirus Antibody, IgM

Test Name Alias

Cytomegalovirus IgM | CMV IgM | Torch | ToRC

Interface Order Alias


Clinical Information

Intended as an aid in the diagnosis of current or recent Cytomegalovirus infection.

Collection Instructions

Specimen Collection: Blood

Container(s): Gold Top (Serum Separator-SST Gel)

Preferred Volume to Collect: 5.0 mL

Minimum Volume to Collect: 2.0 mL

Neonate Volume to Collect: 2.0 mL

Capillary collect ok: Yes

Microtainer acceptable: Yes

Collection Instructions:

  • After collection, gently invert tube 8-10 times.
  • Specimen should be processed within 2 hours – See Processing Instructions.

Processing Instructions (Laboratory, Outpatient or Off-site collection)

Processed Specimen: Serum

Centrifuge/Spin: Yes

Aliquot: No

Minimum Serum Volume: 1.0 mL

Processing Instructions:

  • Allow blood to clot for 30 minutes in a vertical position and centrifuge within 2 hours.

Transport Temperature: Refrigerate

Rejection Criteria

Specimen not centrifuged within 2 hours.

Specimen Stability

Ambient: 3 days

Refrigerate: 7 days

Frozen: aliquot serum for longer storage at-20C or colder

Laboratory Retention: 7 days

Test Frequency

Available Monday through Friday usual TAT 1-3 days.

Reference Range


Results Interpretation

Results Interpretation
Negative CMV IgM Antibody was not detected
Equivocal Equivocal results: CMV IgM status not determined. Obtain an additional sample within an appropriate timeframe (collect in 2-3 weeks) for re-testing
Positive CMV IgM antibody detected which may indicate a current or recent infrection.


Performing Department


Performing Department Laboratory Location

Corewell Health Reference Laboratory, Grand Rapids, MI


Multiplex Flow Immunoassay



CDM Code


Epic Test ID



CMV Ab IgM: 24119-0

Mayo Access Code


Reviewed Date