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Test Code Rubella UM Rubella Antibodies (IgG + IgM)

Important Note

Ordering this test seeks evidience of acute infection. If so, the patient is contagious and Infection Control must be notified. Priority of testing (stat vs. routine) is determined by State Epidemiologist on call (206) 418-5500. Ordering physician must contact State Epidemiologist and then notify Lab of testing priority (stat to State or routine to UW and  Quest).

Additional Codes

Ordering physician must contact State Epidemiologist on call (206) 418-5500. Ordering physician must then notify Lab (x2102) of sample's testing priority (stat to State Lab or routine to UW and Quest Lab). State Lab will not run samples on weekends unless notified on Friday. Stat samples drawn on the weekend will be cabbed to State Lab on Monday morning. Stat samples drawn during the week will be cabbed Mon - Fri (8-4:30 pm).

Clinical System Name

Rubella Antibodies (IgG + IgM)


None specified

Sample Requirements

Specimen: Whole Blood

Container(s): Gold SST or Red or Gold Microtainer

Preferred Vol: 2.0 mL

Minimum Vol: 1.4 mL


Note: Notify Lab of testing priority (stat to State or routine to UW and Quest).

Processing Instructions

Reject due to: Gross hemolysis or gross lipemia

Spin: Y

Aliquot: Y

Temp: 2 - 8 C

Storage location: Request ordering provider call State Epidemiologist on call at (206) 418-5500 to determine testing priority. Enter name of ordering provider and if sample is to go to State Lab or UW and Quest at Cerner order entry prompt. If routine make two serum aliquots.


Spin bood, transfer 0.7 mL serum to aliquot tube affixed with large label. Store routines in CPA fridge send-outs rack. NOTIFY SEND-OUTS OF ALL STATS (voice mail OK).


Off-site collection: Spin, aliquot and refrigerate specimen.


Specimen Type Temperature Time
Serum Room temp

4 d

  Refrigerated 7 d

30 d



STAT Performed TAT
Y Stats set up at State Lab M - F; routines set up at UW and Quest 3 days a week 3 d at State Lab; 5-7 d at UW and Quest


Performing Laboratory

Washington State Laboratory or UW laboratories and Quest Diagnostics


Department:  None specified

Phone Number


Reference Range


IgG: A positive result reflects immunity.  Titers are not available for Rubella IgG to assess immune status. 



Negative <0.90
Equivocal 0.9 - 1.09
Positive ≥ 1.10



Method: EIA and Immunoassay

Analytical Volume: 0.7 mL serum


CPT Codes

86762 x 2

Send Out Instructions


Reference Test Name: Rubella Immune Status and Rubella IgM Serology
Reference Test Number:

RUIS (UW) and 53355P (Quest)


Stats: Cab M-F (8am - 4:30 pm) to State Lab at 1610 NE 150th St. Seattle 98155-7224. State Lab can be reached at (206) 418-5222. Cab weekend stats Monday morning. Routines: Send out M - F with the UW and Quest courier, keep copy of Quest requisition for our records.