BreezysMom
DIS Veteran
- Joined
- Aug 15, 2007
- Messages
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I can help with this...this is what I do every day! I work in Maternal Fetal Medicine Center with Perinatologists.
The first trimester screening is a blood test in conjunction with an ultrasound. They measure the skin fold thickness in the back of the baby's neck via ultrasound. The most optimal time is to do this is between 11-13 weeks. The lab that patented the test is called NTD labs. They take the measurement done in ultrasound and the blood results to calculate your risk of having a baby with Trisomy 13, 18 and 21(Down syndrome). This is a low risk screening. It is just that though, a screening. The only definitive way to find out if your baby has one of the above is to do a CVS or amniocentesis. Yes there is a risk to the pregnancy with both.
I have been doing this for 11 years, since it was in the trial stages and it is an amazing test. It is little to no risk and in my experience has detected chromosome abnormalities early in the pregnancy. If your risks come out to 1 in 10, 000 you will be relieved. If you find that you are increased risk, there are things that docs may be able to do during your pregnancy to guard the health of the baby once born.
The sequential screen in an additional blood test that is done about 15-16 weeks and is used in calculation with the first trimester screening. It goes further to test for the trisomy syndromes and also looks for neural tube defects.
Do not confuse the sequential screen that is used in conjunction with the first trimester screening with the quad screen or also known as AFP test that is done at 16 weeks.
Yes, the quad screen tends to have a lot of false positives. We see a few a week. But if there is a family history of neural tube defects, it is a valuable test as you can treat an infant in utero or immediately after birth if there is a problem.
If you would prefer not to have the testing that is your choice. Some OBs may push the test more than others. In the end it is your choice. If you really don't want to do the screening, I would just opt for a Level 2 ultrasound that is done between 18-22 weeks. This ultrasound will check the overall health of the baby as it is a detailed look at the heart, brain, limbs and so forth.
I talk to people every day who wonder if they should do the screening. 11 years ago we saw about 12 patients a day and now we see triple that amount. Not just advance maternal age patients (35 and older at delivery) but the young ones too!
I am sure your OB or one of his nurses can counsel you a bit more if you are so unsure. Good luck with your decision.
The first trimester screening is a blood test in conjunction with an ultrasound. They measure the skin fold thickness in the back of the baby's neck via ultrasound. The most optimal time is to do this is between 11-13 weeks. The lab that patented the test is called NTD labs. They take the measurement done in ultrasound and the blood results to calculate your risk of having a baby with Trisomy 13, 18 and 21(Down syndrome). This is a low risk screening. It is just that though, a screening. The only definitive way to find out if your baby has one of the above is to do a CVS or amniocentesis. Yes there is a risk to the pregnancy with both.
I have been doing this for 11 years, since it was in the trial stages and it is an amazing test. It is little to no risk and in my experience has detected chromosome abnormalities early in the pregnancy. If your risks come out to 1 in 10, 000 you will be relieved. If you find that you are increased risk, there are things that docs may be able to do during your pregnancy to guard the health of the baby once born.
The sequential screen in an additional blood test that is done about 15-16 weeks and is used in calculation with the first trimester screening. It goes further to test for the trisomy syndromes and also looks for neural tube defects.
Do not confuse the sequential screen that is used in conjunction with the first trimester screening with the quad screen or also known as AFP test that is done at 16 weeks.
Yes, the quad screen tends to have a lot of false positives. We see a few a week. But if there is a family history of neural tube defects, it is a valuable test as you can treat an infant in utero or immediately after birth if there is a problem.
If you would prefer not to have the testing that is your choice. Some OBs may push the test more than others. In the end it is your choice. If you really don't want to do the screening, I would just opt for a Level 2 ultrasound that is done between 18-22 weeks. This ultrasound will check the overall health of the baby as it is a detailed look at the heart, brain, limbs and so forth.
I talk to people every day who wonder if they should do the screening. 11 years ago we saw about 12 patients a day and now we see triple that amount. Not just advance maternal age patients (35 and older at delivery) but the young ones too!
I am sure your OB or one of his nurses can counsel you a bit more if you are so unsure. Good luck with your decision.


