Rubella IgM and IgG Antibody
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| WSLH Department: | CDD - Communicable Disease Division |
| WSLH Test Code: | SS02025 |
| Day(s) Performed: | Weekdays |
| Turn-around Time: | 1-8 days for IgG; approximately 2 weeks for IgM (CDC) |
| Recommended Uses: | Serodiagnosis of Rubella infection. |
| Pre-approval: | N |
| Contraindications: | |
| Additional Tests Performed: |
| Preparation for Collection: | |
| Specimen Requirements: | 3 ml serum or 10 ml vacutainer. |
| Collection Instructions: | Routine blood draw. Acute serum collected as early as possible (within 7-10 days) after onset of illness. |
| Collection Kit/Container: |
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| Requisition Form: |
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| Required Information: | Laboratory regulations require the following minimum information to be provided on the requisition form for a specimen to be accepted for testing: Patient name or unique identifier, date and time of collection, patient date of birth and sex, specimen type/site of collection, test request(s), clinician name and UPIN, and address for reporting results. Please be certain that name/identifier on the form matches that on the specimen label. |
| Rejection Criteria: | |
| Specimen Handling: | Store serum specimen at 2-8 °C and freeze (-20 to -80°C) within 48 hours of collection. Transport on dry ice. |
| Packaging Requirements: | |
| Courier Information: | This test is not eligible for fee-exempt courier service |
| Specimen Receiving Hours: | Monday-Friday 7:45 AM - 4:30 PM, Saturday 7:45 AM - 12:00 PM |
| Results Include: | Negative, Positive, or Equivocal with interpretation |
| Limitations: | The presence of Rubella IgM is indicative of a recent exposure, but cannot differentiate between primary infection and vaccination. False-positive IgM serum may occur in persons with parvovirus infection, infectious mononucleosis, or rheumatoid factor. |
| Additional Tests Recommended: | Rubella virus PCR |
| Additional Comments: | The absence of IgM and IgG possibly indicates the specimen was collected too early. Consider re-testing in 2-4 weeks |
| Methodology: | Rubella IgG Enzyme-Linked Immunosorbent Assay (ELISA) performed at WSLH; Rubella IgM Immunoassay performed at CDC. |
| Includes: | Qualitative assay for the detection of IgG and IgM antibodies to Rubella virus. |
| Regulatory Compliance: |
| CPT Code: | 86762, 99001 |
| Price: | $127.00 |
| Fee Exempt Eligible: | N |
| Billing and Revenue Office: | 1-800-862-1065 arbill@slh.wisc.edu |