Chromosome X Aneuploidy [Presence] in Amniotic Fluid or Chorionic Villus Sample by FISH

**Semantic type:** Laboratory Procedure

**Definition:** A fluorescent in situ hybridization-based procedure that detects aneuploidy of chromosome X in an amniotic fluid or chorionic villus specimen.

**Synonyms:** - Chromosome X aneuploidy [Presence] in Amniotic fluid or Chorionic villus sample by FISH