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A member asked:
Are down's syndrome screening tests accurate?
4 doctors weighed in across 3 answers
Yes: Amniocentesis is 100% accurate. The blood test screening tests are 85-95% accurate.
Answered 12/26/2014
6.7k views
To a degree: The definitive testing involves chromosomes to look at the chromosome 21. Alphafetal protein levels may be elevated, but just suggest risk. Fetal ultrasounds may also suggest risk. Chromosome testing is definitive.
Answered 10/14/2012
5.5k views
Yes: Screening tests are measurements of certain hormones/proteins in your blood. They are not diagnostic of chromosomal problems but they do indicate if you are at higher risk and whether you should be offered further diagnostic testing. Different tests have different detection rates and which one you receive will depend on your doctor's office resources/laboratory. Discuss this with your doctor.
Answered 9/28/2016
4.5k views
Related Questions
A member asked:
I want to known any screening exam to rule out Down syndrome? When is the best to check it? Or only 4D ultrasound can help?
A doctor has provided 1 answer
A member asked:
How important is it to do the second trimester down syndrome screening?
A doctor has provided 1 answer
A member asked:
I had a prenatal screening for Down syndrome in my fetus and my results was 1:182. Does that mean my baby have ds. Plz help.
2 doctors weighed in across 2 answers
A member asked:
If the 1st trimester screening for Down syndrome was negative, how much does an echogenic focus at 20 week screening factor in?
A doctor has provided 1 answer
A member asked:
Which is a better predictor of Down syndrome during the first trimester screening, low papp-a or high hCG levels? Or the ratio between the two values?
A doctor has provided 1 answer
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