Rubella Antibodies (IgG, IgM) Diagnostic [37673X]

Test Code

121712

CPT Codes
86762 (x2)

Includes

(non-orderable) Rubella Antibody (IgG), Dx; Rubella Antibody (IgM)

Preferred Specimen

1 mL serum

Minimum Volume

0.7 mL

Transport Container

Plastic screw-cap vial

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 4 days
Refrigerated: 7 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Gross hemolysis • Gross lipemia

Methodology
Immunoassay (IA)

Setup Schedule

Set up and Report available: See individual tests

Limitations

False-positives may be found in newborns from mothers. IgM may persist after infection is treated.

Reference Range

See Laboratory Report

Clinical Significance

Rubella (German Measles) is a common and usually benign viral infection of children. IgM antibody is detectable 11-25 days after the onset of exanthem, in most individuals 15-25 days after vaccination, and in 90-97% of infants with congenital rubella between 2 weeks and 3 months after birth. Acute and convalescent IgG titers may be interpreted to identify a >30% rise in the antibody index. A positive IgG antibody indicates successful immunization or past exposure.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.