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St. John Health System
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Cytomegalovirus (CMV) Antibodies IgG and IgM

Order Name CMV Ab G/M
Test Number: 5502876
Revision Date 02/08/2024
Test Name Methodology LOINC Code
Cytomegalovirus Antibody IgG
Chemiluminescence Assay 13949-3 
Cytomegalovirus IgG Interpretation
 
Cytomegalovirus Antibody IgM
Chemiluminescence Assay 5126-8 
Cytomegalovirus IgM Interpretation
24119-0 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL Serum Clot Activator SST Frozen
Instructions Separate Serum from cells ASAP within 2 hours of collection.
Serum can be refrigerated up 48 hours before frozen.
Specimen Stability: Room Temperature: Unacceptable, Refrigerated: 48 hours, Frozen 30 Days
GENERAL INFORMATION
Testing Schedule Mon-Sat 
Expected TAT 1-2 Days 
Notes This test will no longer reflex to an IgM IFA confirmation
CPT Code(s) 86644, 86645
Internal Comments 10/20/2017 SU / Stab - JK
1/17/20  refined the frozen processing instructions - JK
2.8.2024 -changed cpt from 86644, 86645 (add CPT 86645 if Reflexed to .CMV IgM IFA) to 86644, 86645
If Cytomegalovirus (CMV) Antibodies IgM is equivocal or positive to the following test code is reflexed. (not available to order by itself only as reflex)
Order Code [5567800.CMV IgM IFA
Result Codes: [5567800CMV IgM IFA - LOINC: 5127-6
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Immunology - Serology