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12 May 2004

Pre Natal Tests
I have a question regarding the triple screening test. I'm 15 weeks pregnant with my second child. My appointment for the triple screening test is on Friday but I would like more background info before then as I'm extremely anxcious. My first child has Down Syndrome (Trisomy 21) and I will be 35 when this baby is born. This places me in a high risk category as it is. I decided to have the triple screening test and based on the outcome decide on the amnio as I am afraid of the risks involved. My question - these factors mentioned are also taken into consideration when they calculate your risk. Would my risk not be indicated as very high based on that, without even taking the actual bloodtest into account? Is that not one of the reasons why so many false-positives occur with the triple screening.
Many thanks
Answer 373 views

01 Jan 0001

Your risk based on your age and the previous pregnancy might be in the region of 1 in 400 (not exact figures). The triple test may show a risk of 1 in 600, for example, and this might influence your decision about the amnio. On the other hand, it might show a risk of 1 in 100, which would be a higher risk. Remember that they are just risks and the only way of knowing for certain is with an amnio.

Best wishes
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