Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  


Sunquest Test Code:
RUBEG      Geisinger Epic Procedure Code: 86765         Geisinger Epic ID: 7469

Specimen type:
Preferred collection container:
Alternate Collection Container:
6 mL red-top (plain, non-serum separator) tube
Specimen required:
0.5 mL serum; minimum 0.2 mL.

Specimen processing instructions:
Allow to clot. Centrifuge and submit 0.5 mL serum. 
Transport temperature:
Refrigerated (preferred). Room temperature (stable 8 hours) and frozen specimens also acceptable.
Specimen stability:
Room temperature: 8 hours. 2-8°C: 7 days. Frozen: 6 months.
Rejection criteria:
Specimen stability exceeded; specimen grossly hemolyzed.

Interpretation guide:

AU/ml Value





Absence of detectable measles virus IgG antibodies. A negative result generally indicates that the patient has not been infected and is susceptible to measles. If the subject has no history of measles, has not been previously vaccinated and exposure to measles virus is suspected despite a negative finding, a second sample should be collected no less than 1-2 weeks later.

25.0 – 29.9


Equivocal samples should be retested. If the result remains equivocal after repeat testing, a second sample should be recollected no less than 1-2 weeks later.



Presence of detectable measles virus IgG antibodies. A positive result generally indicates past exposure to measles virus or previous vaccination.

CPT code(s):
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Rubeola antibody IgG detection and immune status ratio (ISR) to Rubeola IgG.
Measles, Measles IgG Antibody, Rubeola antibody
Clinical significance:
Measles (rubeola) is a highly contagious disease resulting from infection by rubeola virus. Serology tseting for measles can ascertain the immune status of previously vaccinated individuals and detect seroconverstion in recently vaccinated individuals. A positive rubeola IgG antibody in the absence of a current or recent infection is evidence of immunity to rubeola. Acute infection is diagnosed by testing for rubeola IgM antibody.
Doctoral Director(s:)
Stacy Kenyon, PhD, DABCC
Hoi-Ying Elsie Yu, PhD, DABCC    
Review Date: 11/07/2018

Performing Locations

Geisinger Medical Center

Performing laboratory: Immunology
Technical Lead: Kathy Hurst
Frequency: Sunday, Tuesday through Friday: 1st shift
Performed stat? No
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