Yes, there are other studies that may be appropriate. Please contact Quest Genomics Client Services at 866.GENE.INFO to discuss the case with a genetic counselor and for information on adding additional testing. There are many causes for development disorders, some of which are genetic. In the absence of clinical suspicion for a specific genetic disorder, a microarray analysis is recommended as the first-tier cytogenetic diagnostic test for patients with unexplained developmental delay/intellectual disability, autism spectrum disorders, or multiple congenital anomalies.1 This test can detect subtle deletions and duplications associated with these disorders. If clinical suspicion exists for a specific disorder, there may be other genetic testing available.