U.S. doctors online nowAsk doctors free
Farmingdale, NY
A 30-year-old female asked:

My fetus measure 6.5 cm crl,13 weeks and 158 heart rate.how much the ultrasound can be off ?

1 doctor answer2 doctors weighed in
Dr. Asha Kamnani
Obstetrics and Gynecology 45 years experience
5 to 7 days: Ultra sounds in the first trimester is pretty accurate.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Jul 9, 2014


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.