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Test Code RUBOS Measles (Rubeola), IgG, Serum

Methodology

Chemiluminescent Immunoassay (CLIA)

Performing Laboratory

Munson Medical Center Laboratories

Specimen Requirements

Preparation of Patient: 

None

 

Specimen Type:

Serum

 

Container Type: 

Gold Top SST Gel & Clot Activator Tube

LIS Container Code = GL

 

Specimen Volume: 

0.5 mL of Serum minimum 200uL of Serum

 

Specimen Handling/Transport:

For shipping, specimens should be maintained at 2-8°C.

 

Specimen Stability/Storage:

5 days 2-8°C

Reference Values

Reference Ranges:  Negative

Result Interpretation: The analyzer automatically calculates measles virus IgG antibody concentrations expressed as arbitrary units (AU/mL) and grades the results.  Diagnosis of infectious diseases should not be established on the basis of a single test result, but should be determined in conjunction with previous infection history, clinical findings and other diagnostic procedures as well as in association with medical judgment.

 

AU/mL Value

Results

Interpretation

< 13.5 AU/mL

Negative

Absence of detectable measles virus IgG antibodies.  A negative result generally indicates that the patient has not been infected and is susceptible to measles.  If the subject has no history of measles, has not been previously vaccinated and exposure to measles virus is suspected despite a negative finding, a second sample should be collected and tested no less than one to two weeks later.

≥ 13.5 AU/mL

and

< 16.5 AU/mL

Equivocal

Equivocal samples should be retested.  If the result remains equivocal and repeat testing, a second sample should be collected no less than one to two weeks later.

≥ 16.5 AU/mL

Positive

Presence of detectable measles virus IgG antibodies.  A positive result generally indicates past exposure to measles virus or previous vaccination.

Test Priority & Frequency

Non-Emergent

24 hours 7 days a week

Test Classification and CPT Coding

86765