Rubella Antibody, IgG

Label Mnemonic:	RUBEIGG
Epic code:	LAB4835
Downtime form:	Doctor/Provider Orders - Pathology Core and Specialty Care Nursery

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