Sep 29, 2004
I really want to know what actually triggers a "False Positive" HIV result in a pregnant woman- why this doesn't happen to men too and that this theory is not widely shared with other health care professionals- Why is this?. Also what time after the delivery that will be realistic to go for another test
| Response from Dr. Lee
You are not the only one who wants to know what about pregnancy triggers False positive HIV tests. It only happens with pregnancy (therefore not in men) and there are other antibody changes in pregnancy as well (syphillis, lupus, etc.). The thought is that because pregnancy involves a foreign body/protein (the infant)inside the mother and because our bodies are programmed to react against foreign bodies by the formation of antibodies in order to protect us from "invasion", the immune system is modified in order to prevent "rejection" of the fetus. Some of the modifications include the production of extra, non-specific and sometimes false antibodies. Details are not known. Be well.
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