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What can you do to detect trisomy with prenatal testing?

8 doctors weighed in
Dr. Danae Steele
Obstetrics & Gynecology - Maternal Fetal Medicine
5 doctors agree

In brief: CVS or amniocentesis

Trisomies can be detected with chorionic villi sampling (cvs) or amniocentesis.
Cvs is performed between 10-13 weeks, and involves removing a small sample of the placenta usually using a small tube, or catheter that is inserted through the cervix. Amniocentesis is performed between 15-20 weeks gestation and is a procedure where amniotic fluid is removed from around the fetus using a needle.

In brief: CVS or amniocentesis

Trisomies can be detected with chorionic villi sampling (cvs) or amniocentesis.
Cvs is performed between 10-13 weeks, and involves removing a small sample of the placenta usually using a small tube, or catheter that is inserted through the cervix. Amniocentesis is performed between 15-20 weeks gestation and is a procedure where amniotic fluid is removed from around the fetus using a needle.
Dr. Danae Steele
Dr. Danae Steele
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Dr. Nikolaos Zacharias
Obstetrics & Gynecology - Maternal Fetal Medicine
1 doctor agrees

In brief: Invasive/non-invasiv

Traditional invasive prenatal diagnosis involves amniocentesis or placental biopsy/chorionic villus sampling.
Recent technology allows the analysis of fetal dna in the maternal blood without risks to the pregnancy (maternit21, other tests now available). Screening prenatal ultrasound can also give hints of trisomy, but is not diagnostic in and of itself.

In brief: Invasive/non-invasiv

Traditional invasive prenatal diagnosis involves amniocentesis or placental biopsy/chorionic villus sampling.
Recent technology allows the analysis of fetal dna in the maternal blood without risks to the pregnancy (maternit21, other tests now available). Screening prenatal ultrasound can also give hints of trisomy, but is not diagnostic in and of itself.
Dr. Nikolaos Zacharias
Dr. Nikolaos Zacharias
Thank
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