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Broken Arrow, OK
A 19-year-old female asked:

Can a blood test confirm pregnancy even if a woman has low hcg at 3 and a half weeks after sex?

2 doctor answers4 doctors weighed in
Dr. Timothy Brown
Obstetrics and Gynecology 42 years experience
An HCG greater than 5 is a positive pregnancy, even if it is a low number. It will rise rapidly if a pregnancy is normal. Three and a half weeks after sex the test should be positive.
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Dr. Gurmukh Singh
Pathology 51 years experience
HCG level in serum is a blood test and the result you provided is not consistent with pregnancy.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Jan 23, 2022

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