Rubella Antibody, IgG
Label Mnemonic: RUBEIGG
Epic Lab Code: LAB4835
Downtime Form: A-1a General Laboratory Requisition
Chemistry
6240 RCP
356-3527
Specimen(s):
Plasma
Collection Medium:
Plasma Separator Tube 4.5 mL
Alternate Collection Media:
Call laboratory for additional acceptable specimen collection containers.
Minimum:
3 mL whole blood in light green top tube or TWO Microtainer® devices.
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
1 hour (upon receipt in laboratory)
Reference Range:
7 IU/mL or less: Negative - No significant level of detectable rubella IgG antibody. 8-9 IU/mL: Equivocal - Repeat testing in 10-14 days may be helpful. 10 IU/mL or greater: Positive - IgG antibody to rubella detected, which may indicate a current or previous exposure/immunization to rubella. Rubella IgG antibody can be formed following rubella infection or after rubella vaccination. A reactive result is consistent with immune status to rubella virus. Non-reactive and equivocal results flag as abnormal in Epic which indicates non-immune or equivocal immune status to rubella. A non-reactive result does NOT imply rubella infection. If ordered in workup of possible rubella infection, the IgG antibody results should be interpreted in conjunction with other laboratory tests, clinical history, and physical examination.
Interpretive Data:
The best evidence for current infection is a significant change on two appropriately timed specimens, where both tests are done in the same laboratory at the same time.
Methodology:
Multiplex Flow Immunoassay
CPT Code:
86762