There are many types of tests that may be performed to determine
whether a child has a genetic birth defect. Listed in the
directory below are some, for which we have provided a brief
overview. Chromosome Studies: Karyotype, Extended Banding,
Fluorescence In Situ Hybridization (FISH), and Chromosomal
Microarray Analysis Studies for Single Gene Defects: DNA (Direct
and Indirect) Biochemical Genetic Testing