May be at 9-12 wk: Hook effect generally does not affect hpt. Hcg levels reach their peak at 9-12 weeks, and may interfere with the test, but by then other signs of pregnancy are present. See these sites for more info. http://www.pregnancylab.net/2011/05/false-negative-pregnancy-tests.html http://www.Americanpregnancy.Org/duringpregnancy/hcglevels.Html.
Answered 12/2/2012
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2 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
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