* This volume does not allow for repeat testing
| Titer | Interpretation |
| <1:20 | Antibody not detected |
| ≥1:20 | Antibody detected |
The traditional serologic diagnosis of measles requires a significant rise in antibody titer between acute and convalescent sera. However, detection of IgM antibody in a single specimen may indicate acute disease.
Correct interpretation of serologic data depends upon the proper timing of specimen collection in relation to rash onset. This timing is particularly important for interpreting negative IgM results, since IgM antibody peaks approximately 10 days after rash onset and is usually undetectable 30 days after rash onset.
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
1 to 3 days
00910354
86765