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A member asked:
Is 4 weeks too soon for a blood pregnancy test?
A doctor has provided 1 answer
No: Most pregnancy tests will turn positive about 2 weeks after conception. In most women with regular cycles, this is 4 weeks after the start of their last period. If is negative right at 4 weeks and your cycle is abnormal or late, then check again 1 week later.
Answered 9/3/2013
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