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22862 Rubella Immune Status

Rubella Immune Status
Test Code: RUBELLA
Synonyms/Keywords
 German Measles Antibody​
Useful For
This test qualitatively determines immune status for Rubella virus to aid in identifying nonimmune individuals for consideration of vaccination. The test includes the numerical "Antibody Index (AI)" result.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
No​ Serum​ Red Top Tube (RTT)​ Serum Separator Tube (SST)​ 1.0 mL​ 0.5 mL​ 0.5 mL​
Specimen Stability Information
Specimen Type Temperature Time
Serum​ Refrigerate​ 7 days​
Frozen​ > 7 days​
Rejection Criteria
Gross hemolysis
Gross lipemia
Gross icterus
​Plasma
​Heat inactivated sera
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Friday​ Less than 2 hours​ Multiplex Immunoassay/Biorad BioPLex 2200
Test Information
This test uses a multiplex flow fluorescence immunoassay to detect IgG-class antibodies directed against rubella virus.​
Reference Range Information
Performing Location Reference Range
Marshfield​

Reported as Positive, Equivocal or Negative

Positive:  AI > or = 1.0

Equivocal:  AI > 0.7 and < 1.0

Negative:  AI < or = 0.7

Interpretation
T​his test is to be used only to establish serological status to Rubella virus.  The reported AI value is for reference only.  This is a qualitative test and the AI is not indicative of the amount of antibody present, rather indicating that specific IgG-class antibodies were, or were not, detected, to determine if there was prior exposure or vaccination.
 
A positive test result may be due to immunization or natural infection. A positive test has a high correlation with, but does not guarantee, immunity to Rubella virus.
 
A negative test result indicates a lack of antibody to Rubella virus, marking the individual as a candidate for vaccination.
 
An equivocal result for this test indicates some reactivity of the individual's blood to the components of this test, but serological status cannot be determined.  In such cases the patient may be retested once to detect sero-conversion; alternatively, vaccination may be considered.
Outreach CPTs
CPT Modifier
(if needed)
Quantity Description Comments
86762 ​
Synonyms/Keywords
 German Measles Antibody​
Ordering Applications
Ordering Application Description
​Centricity ​Rubella Ab-Immune
​Cerner ​Rubella Antibody IgG
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
No​ Serum​ Red Top Tube (RTT)​ Serum Separator Tube (SST)​ 1.0 mL​ 0.5 mL​ 0.5 mL​
Specimen Stability Information
Specimen Type Temperature Time
Serum​ Refrigerate​ 7 days​
Frozen​ > 7 days​
Rejection Criteria
Gross hemolysis
Gross lipemia
Gross icterus
​Plasma
​Heat inactivated sera
Useful For
This test qualitatively determines immune status for Rubella virus to aid in identifying nonimmune individuals for consideration of vaccination. The test includes the numerical "Antibody Index (AI)" result.
Reference Range Information
Performing Location Reference Range
Marshfield​

Reported as Positive, Equivocal or Negative

Positive:  AI > or = 1.0

Equivocal:  AI > 0.7 and < 1.0

Negative:  AI < or = 0.7

Interpretation
T​his test is to be used only to establish serological status to Rubella virus.  The reported AI value is for reference only.  This is a qualitative test and the AI is not indicative of the amount of antibody present, rather indicating that specific IgG-class antibodies were, or were not, detected, to determine if there was prior exposure or vaccination.
 
A positive test result may be due to immunization or natural infection. A positive test has a high correlation with, but does not guarantee, immunity to Rubella virus.
 
A negative test result indicates a lack of antibody to Rubella virus, marking the individual as a candidate for vaccination.
 
An equivocal result for this test indicates some reactivity of the individual's blood to the components of this test, but serological status cannot be determined.  In such cases the patient may be retested once to detect sero-conversion; alternatively, vaccination may be considered.
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Friday​ Less than 2 hours​ Multiplex Immunoassay/Biorad BioPLex 2200
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)
Quantity Description Comments
86762 ​
For most current information refer to the Marshfield Laboratory online reference manual.