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Test Code RUBE or LAB496 Rubella IgG, Qualitative, Serum

Important Note

Patient Preparation: For 12 hours before this test, do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins. Biotin can interfere with many immunoassay tests.

Specimen Requirements

Container Type:

Optimal: Gold 

Acceptable: Red
Optimal Collection Volume: 

4.5mL; full tube
Minimum Volume:

1 mL whole blood
Collection Instructions:

Gently invert the sample 5-6 times after collection.
Specimen Transport:

Refrigerate
Processing Instructions: 

1. Allow the specimen to clot for 30 minutes.

2. Centrifuge specimen within 2 hours of collection.

3. After centrifugation, specimen tubes without a gel barrier should have the serum aliquoted to a false bottom container.

4. Keep the serum refrigerated until testing can be performed.

Specimen Stability

Specimen Type Temperature Time
Serum Refrigerated 3 weeks
Room Temperature 7 days
Frozen 3 months

Specimen Rejection Criteria

Hemolysis Mild OK; Moderate OK; Gross Reject
Lipemia Mild OK; Moderate OK; Gross Reject
Icterus Mild OK; Moderate OK; Gross Reject
Other Quantity not sufficient

Useful For

This assay may be used as an aid in the assessment of immune status to rubella in individuals including women of childbearing age.

Methodology

Roche Cobas - Electrochemiluminescence immunoassay 

Reference Ranges

 Test ID  

Reference Range and Reporting Units

RUBE

Immune: > 10 IU/mL

Non-Immune: < 10 IU/mL

Interpretive

IgG antibodies to the Rubella virus indicate previous exposure either by vaccination or a prior Rubella infection and is indicative of presumptive immunity. 

Day(s) Performed

24/7

Expected TAT

Same day

Performing Laboratory

Bronson Laboratory, Chemistry - Kalamazoo

Sample Retention Time

7 days

CPT Code

86762

LOINC Code

40667-8