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Dr. Andrew Rynne
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Dr. Andrew Rynne

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Pregnant, Had Ultrasound, The Doctor Asked Me To Have Dual Test.Is There Any Issue In My Pregnancy?

I am 13 weeks pregnant and just had a ultrasound , the doctor was doing ultrasound asked me to have dual test though my gynecologist not yet told to do so. I am worried Is there any issue in my pregnancy though I asked the radiologist who was doing ultrasound that is there any problem in my pregnancy, she is no. I am worried. Please guide me
Thu, 25 Apr 2013
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OB & GYN Specialist,  's  Response
Dear verma.pallavi03,
Dual test is a screening test done to screen for chromosomal defects, most common of which is trisomy 21 (down's syndrome). I don't want you to get worried about this for many reasons:
- May be it is the policy in your country to have this test as routine.
- May be you are over 35 years where it becomes more indicated.
- This test is a screening test, meaning that if it is negative the abnormality is excluded, while if positive the abnormality is likely but not sure until confirmed by a further diagnostic test (i.e. it may be false positive).
If it is not routine in your country and you are not over 35 years, the sonographer may have seen something abnormal most important is increased NT ( nuchal translucency ).
I advise you to ask your obstetrician before doing this test because it is relatively expensive.
If it doesn't matter to you wether it's a Down or a normal baby, then there is no need to do this test and a detailed anomaly scan at 18-22 weeks will be enough.
I hope these words were usefull to you and I wish you best luck with your pregnancy.
Dr. Ahmed Bahaa.
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Pregnant, Had Ultrasound, The Doctor Asked Me To Have Dual Test.Is There Any Issue In My Pregnancy?

Dear verma.pallavi03, Dual test is a screening test done to screen for chromosomal defects, most common of which is trisomy 21 (down s syndrome). I don t want you to get worried about this for many reasons: - May be it is the policy in your country to have this test as routine. - May be you are over 35 years where it becomes more indicated. - This test is a screening test, meaning that if it is negative the abnormality is excluded, while if positive the abnormality is likely but not sure until confirmed by a further diagnostic test (i.e. it may be false positive). If it is not routine in your country and you are not over 35 years, the sonographer may have seen something abnormal most important is increased NT ( nuchal translucency ). I advise you to ask your obstetrician before doing this test because it is relatively expensive. If it doesn t matter to you wether it s a Down or a normal baby, then there is no need to do this test and a detailed anomaly scan at 18-22 weeks will be enough. I hope these words were usefull to you and I wish you best luck with your pregnancy. Dr. Ahmed Bahaa.