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A member asked:

28 days since sex how accurate will a blood test be to detect pregnancy i am also on alesse?

A doctor has provided 1 answer

Very, very accurate: Pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, or medications. A correctly done blood test gives a reliable result 3 weeks after sex (2-3 weeks after when conception might have happened) or 1 week after missing a withdrawal period.

Answered 7/19/2017

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Related Questions

A member asked:

Is a blood pregnancy test accurate 18 days after sex? I got one at my doctors office last week and it was neg. Could i still be pregnant ?

A doctor has provided 1 answer

A member asked:

Last period was Aug 25th! Been 4 weeks and 2 days since last sex encounter. Did a blood hcg test yesterday and came back negative. The level was <1 so it was below 5. Is it accurate enough to rule out pregnancy?

A doctor has provided 1 answer

A member asked:

Took a urine test 90 days after sex. And a blood hCG pregnancy test 72 days after sex. How accurate is it. Can I trust the result? Thank you

A doctor has provided 1 answer

A member asked:

How many days after sex can you get a pregnancy blood test taken? I had one done 19 days after sex and a late period. Came back negative. Accurate?

A doctor has provided 1 answer

A member asked:

OB/ GYN QUESTION Generally speaking, how many days after sex can a blood pregnancy test pick up pregnancy for 100% accuracy? (My cycle is about 40 days long??

2 doctors weighed in across 2 answers

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