Test Directory

Test Code
RUBG
Test Name
Rubella IgG Ab
CPT Codes
86762
Expected Turnaround Time
1 - 3 days
Clinical Utility

Presence of Rubella IgG antibodies indicates current or past infection or vaccination. Acute infections can be serologically confirmed by a significant (2 to 4-fold) rise in Rubella IgG antibody titer in acute and convalescent (collected >7 days after acute specimen) samples, or by the presence of Rubella IgM antibodies.

Specimen and Container Info

Specimen Type: Serum

Preferred Collection Container: Gold Top, Serum Separator

Alternate Collection Container: Red Top, Separator

Minimum Acceptable Volume: 0.8 mL

Processing and Submission Instructions

Separator tubes: Contains clot activator and gel for separating serum from cells, but not anticoagulant. Separate serum from cells as soon as the clot has formed (30 minutes). If specimen is centrifuged before clotting is complete, a fibrin clot will form on top of the cell. This may cause the gel barrier to not be intact and could cause improper separation of serum and cells, possibly affecting test results.

Transport Instructions

Transport to the laboratory refrigerated.

Stability Requirements

Refrigerated

7 days
Methodology
Chemiluminescent Immunoassay
Reference Intervals
Performing Location
Roble Road Core Laboratory
Testing Schedule
Routine, daily