Chromosome 13 and 18 and 21 and X and Y Aneuploidy in Blood or Tissue by FISH Nominal

**Semantic type:** Laboratory Procedure

**Definition:** A nominal fluorescent in situ hybridization-based procedure that detects aneuploidy of chromosomes 13, 18, 21, X and/or Y in a blood or tissue specimen.

**Synonyms:** - Chromosome 13+18+21+X+Y aneuploidy in Blood or Tissue by FISH Nominal