Down syndrome screening
Fetal chromosomal assessment
Down syndrome screening refers to medical tests during pregnancy that assess the likelihood a fetus has Down syndrome, a chromosomal condition causing developmental differences.
Screening typically combines blood tests and ultrasound measurements, producing a risk estimate rather than a definitive diagnosis.
Higher-risk results may lead to diagnostic testing like amniocentesis: The Down syndrome screening came back low-risk, so we decided against further testing.
- prenatalBefore birth
- ultrasoundInaudible high-frequency waves
- geneticRelating to heredity
- trisomyThree chromosomes, not two
- chromosomeDNA strand carrying genes
nuchal · translucency · blood test · maternal · fetal · trimester · risk · diagnosis · counseling · markers · karyotype · positive · false positive · false alarm · results · anomaly · genetic counselor · age