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A member asked:
Would it be possible to have a false negative 3 weeks after unprotected sex?
A doctor has provided 1 answer
Yes: Urine tests are helpful. A blood test is more sensitive but they are both subject to both false positive and false negative.
Answered 9/29/2016
4.9k views
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2 doctors weighed in across 2 answers
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Had unprotected sex two weeks ago and took a test four days earlier than instructed, with an irregular period. Could it have been a false negative?
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