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Fifth Disease - Exams and Tests

A doctor usually diagnoses fifth disease by observing its distinctive rash , by asking about any history of exposure to the disease, and by doing a physical exam. Viral tests may be done to confirm a recent infection (within the past 3 months) by the presence of certain antibodies. Also, a complete blood count (CBC) may be done to help rule out a bacterial infection or to check for anemia.

Diagnosing fifth disease during pregnancy

A pregnant woman may have a blood test for parvovirus B19 antibodies if she is exposed to or has symptoms of fifth disease. The blood test may show that she has:

Had the disease in the past and is now immune.
Not had the disease in the past and does not have immunity. She should avoid exposure to parvovirus B19.
Recently contracted the disease and should be closely monitored throughout her pregnancy. This may include frequent fetal ultrasounds.

WebMD Medical Reference from Healthwise

Last Updated: 4/, 010

This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.