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pregnancy and false positive
Feb 17, 2004

Is there a relationship between pregnancy and false hiv positive, or undetermined hiv result?

Response from Dr. Lee

Yes. Pregnancy affects the immune system and some of the tests. Although false positive HIV ELISA and/or Western Blot antibody tests are relatively rare, they occur more frequently to women who are pregnant. In these cases, the WB is most often indeterminate (fewer bands positive) rather than fully positive. The indeterminate Western Blot tests should always be repeated if there is a question about their validity. An HIV PCR test may be a more definitive answer in cases where there is an indeterminate test.

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