Laboratory evaluation of patients with developmental delay/intellectual disability, congenital
anomalies, and dysmorphic features has changed significantly in the last several years with
the introduction of microarray technologies. Using these techniques, a patient's genome can
be examined for gains or losses of genetic material too small to be detected by standard G-
banded chromosome studies. This increased resolution of microarray technology over
conventional cytogenetic analysis allows for identification of chromosomal imbalances with …