Rubella IgM Antibody
Test Mnemonic
RUBIGM
CPT Codes
- 86762 - QTY (1)
LOINC ®
5335-5
Aliases
- German Measles IgM Antibody
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | SST (Gold) | Refrigerated | Allow specimen to clot completely at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to standard aliquot tube. Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of acute specimens. Label specimens plainly as 'acute' or 'convalescent.' |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | After separation from cells: 2 days |
| Refrigerated | After separation from cells: 2 weeks |
| Frozen | After separation from cells: 1 year (Avoid repeated freeze/thaw cycles) |
Days Performed
Sun - Sat
Turnaround Time
1 - 3 days
Methodology
| Name | Description |
|---|---|
| Semi-Quantitative Chemiluminescent Immunoassay |
Reference Range
| Rubella IgM | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Years | 99 Years | Normal | <= 19.9 Not Detected | AU/mL | Years | 99 Years | Normal | 20.0 - 24.9 Indeterminate | AU/mL | Years | 99 Years | Normal | >= 25.0 Detected | AU/mL |
Special Info
Acute and convalescent specimens must be labeled as such; parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of acute specimens. Please label specimen plainly as 'acute' or 'convalescent'. Contaminated, heat-inactivated, or grossly hemolyzed specimens are unacceptable. This test is New York DOH approved.
Clinical Info
Not recommended as a stand-alone test. Testing immediately post-exposure is of no value without a later convalescent specimen. While the presence of IgM antibodies suggests current or recent infection, low levels of IgM antibodies may occasionally persist for more than 12 months post-infection or immunization. The magnitude of the measured result is not indicative of the amount of antibody present.