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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Does Low Gestational Sac During IVF Process Indicate?

I had an ultra sound at 4 weeks 6 days and nothing could be seen, just 3 small dots. I had another ultra sound 1 week later at 5 weeks 6 days and they only saw a very small gestational sac measuring at 3.51mm. The dates are exact because i had an IVF so we know the exact date of ovulation. Everything I read online says that by 6 weeks my gestational sac should be at 14mm, but mine was only at 3.51! Does this sound like I may be in for a miscarriage?
Tue, 22 Dec 2015
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General & Family Physician,  's  Response
HI,
I understand your concern.
Average size of gestational sac at 5 weeks is 2-3 mm.
After IVF assessment of the embryo size with USG alone is not considered reliable blood HCG levels are more confirmatory .. as proportional HCG levels with trans abdominal detection of an embryo is sufficient to assess pregnancy by IVF in early weeks.
Please don't worry follow your doctor's instructions & be positive.
Thanks.
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What Does Low Gestational Sac During IVF Process Indicate?

HI, I understand your concern. Average size of gestational sac at 5 weeks is 2-3 mm. After IVF assessment of the embryo size with USG alone is not considered reliable blood HCG levels are more confirmatory .. as proportional HCG levels with trans abdominal detection of an embryo is sufficient to assess pregnancy by IVF in early weeks. Please don t worry follow your doctor s instructions & be positive. Thanks.