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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Is It Too Early To See A Sac Using Transvaginal Ultrasound?

Hi, I just had an ultrasound at 2 weeks and 4 days after embryo transfer (5day blastocyst). The doctor didn't see anything. My first beta was very low at 57.6 (1w4d after ET) and then went up to 175.3 (2w1d after ET). Is it too early to see a sac using transvaginal ultrasound (Sep 23 was transfer day and today Oct 11 was the u/s). thanks.
Fri, 17 Feb 2017
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Infertility Specialist,  's  Response
Hi, actually your can see the sac only when hcg level reaches 1500. Also, hcg level should double in 48 hours. if it is not happening, it indicates towards a failing pregnancy. So, I think you should repeat a hcg test after 48 hours and then you can be sure of the pregnancy. Hope I have answered your question.
Regards
Dr khushboo
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Is It Too Early To See A Sac Using Transvaginal Ultrasound?

Hi, actually your can see the sac only when hcg level reaches 1500. Also, hcg level should double in 48 hours. if it is not happening, it indicates towards a failing pregnancy. So, I think you should repeat a hcg test after 48 hours and then you can be sure of the pregnancy. Hope I have answered your question. Regards Dr khushboo