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Serologic Testing for Rubella


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Patient case (continued)

Slide 9

July 2008

Due to the concern of the initial positive Rubella IgM result, the obstetrician appropriately ordered follow-up testing. A second serum sample was collected and submitted for Rubella serology. The results from this specimen were reported as positive for IgG, but negative for IgM.

In addition, a throat swab and urine specimen were forwarded to the state health laboratory for viral culture, and this was found to be negative. Despite these follow-up results, I think an ordering physician would still be left to answer the question, How should the initial positive Rubella IgM be interpreted?

Patient case (continued)


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