Queens, NY
A 23-year-old female asked:
Is a true false positive a reason for concern ? my tests are positive at home but negative through the blood?
1 doctor answer • 1 doctor weighed in

Dr. Gurmukh Singhanswered
Pathology 50 years experience
Test for what?: If you mean pregnancy test, blood test is more reliable.
Conception occurs within day or so of the sex. It takes about 3 weeks for the embryo to make enough HCG for a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. If the result is negative repeat the test in 4-5 days.
12 viewsAnswered Jan 10, 2021
Last updated Jan 11, 2021
People also asked
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits - just $39!
50% off with $15/month membership
Disclaimer:
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.