3 doctors weighed in:

How long after having sex does a pregnancy test give the correct response?

3 doctors weighed in
Dr. Heidi Fowler
Psychiatry
1 doctor agrees

In brief: A standard home

Pregnancy test can usually detect pregnancy at the time a period is missed.
First response early result pregnancy test is reported to detect HCG up to 6 days prior to your anticipated period. If you have a negative pregnancy test and your period still hasn't come - then repeat the test in a week using a first morning void.

In brief: A standard home

Pregnancy test can usually detect pregnancy at the time a period is missed.
First response early result pregnancy test is reported to detect HCG up to 6 days prior to your anticipated period. If you have a negative pregnancy test and your period still hasn't come - then repeat the test in a week using a first morning void.
Dr. Heidi Fowler
Dr. Heidi Fowler
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Angela Zhang
Family Medicine

In brief: 2 weeks

Home pregnancy tests measure the amount of beta human Chorionic Gonadotropin hormone in urine.
It takes about 1 week after conception for beta HCG to become detectable in the blood and 2 weeks for it to become detectable in urine. If it has not been 2 weeks since your missed period, your home pregnancy test may be falsely negative.

In brief: 2 weeks

Home pregnancy tests measure the amount of beta human Chorionic Gonadotropin hormone in urine.
It takes about 1 week after conception for beta HCG to become detectable in the blood and 2 weeks for it to become detectable in urine. If it has not been 2 weeks since your missed period, your home pregnancy test may be falsely negative.
Angela Zhang
Angela Zhang
Answer assisted by Angela Zhang, Medical Student
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