Pediatric genetics involves specialized training in both pediatrics and genetics. These differences could lead to the child having problems with health, social interaction and/or development. Pediatric geneticists can also help determine whether a specific disease is hereditary and can offer testing for family members to determine if children will develop similar problems to those of parents. Pediatric geneticists comprise the medical care to children of all ages from birth to adolescence. Tests are conducted on all infants regardless of whether or not they appear healthy, since many defects are not visible at birth.