First trimester screening is a noninvasive screening test for fetal Down syndrome and Trisomies 13 and 18. This test is available to women between 11-4/7 and 13-6/7 weeks of pregnancy and is performed by Fetal Medicine Foundation (FMF)-accredited and Nuchal Translucency Quality Review Program (NTQR) credentialed sonographers. Prenatal genetic counseling services are also provided in conjunction with first trimester screening, if requested.
For more information about first trimester screening at Johns Hopkins, please click on the links below:

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