Laboratory Test Information Guide

Details for Measles Serology - Measles IgG/IgM

Test Name: Measles Serology - Measles IgG/IgM
Alternate Name(s): Rubeola Virus Serology
Laboratory: Microbiology
Specimen Type: 5 mL Gold or 6 mL Red top Vacutainer tube
Collection Information: Collect blood aseptically in a Vacutainer tube.

Acute: Collect the acute sample within 7 days after the onset of the rash.
Convalescent: Collect the convalescent sample 7 to 10 days after the acute.

Indications for testing:
Diagnosis of acute infection (IgM/IgG)
Immunodeficiency evaluation (IgG)
Post-exposure prophylaxis evaluation (IgG)

Serology is NOT indicated for patients with unknown immunization records. Immunization is recommended as a preferred strategy by the Canadian Immunization Guide.
Test Schedule: Referred out weekdays to Public Health Lab
Turnaround time from when specimen
is received in testing laboratory:
Up to 1 week
Reference Range: See report
Effective Date: 2006-07-01
Revised Date: 2019-11-14
Critical Value:  
Interpretive Comments: A single serum sample will yield significant results for establishing immune status only.
Special Processing:  
Method of Analysis: ELISA
Critical Information Required: Indicate purpose of the request as diagnostic (IgM) or immunity (IgG) on the Public Health Requisition.

If IgG and IgM testing is necessary, a completed Public Health Laboratory Requisition with the following information is required:
acute/recent infection
vaccination history
clinical symptoms/history
date of onset
Storage & Shipment: Specimen must be received within 24 hours of collection. If the transport time exceeds 24 hours, the specimen will only be tested if appropriate.
System Codes: 
Referred To: MEAG: London Public Health Lab
MEAM: Central Public Health Lab, Toronto

Questions? Comments? Contact Laura Gopaul