Since many clinicians have a prevailing notion of what autism is based on stereotypes of its appearance in white cis males even when minority children with autism do get access to health care, there are diagnostic biases in place that delay if not prevent their being diagnosed with autism.

Black children with autism-spectrum disorders are often misdiagnosed as having Attention Deficit Hyperactivity Disorder, Obsessive Compulsive Disorder, and Oppositional Defiant Disorder.

Black children on average required three times the number of visits over a period three times as long as Caucasian children before receiving an autistic disorder diagnosis. While it usually takes three or four doctor's visits for a white family to get an accurate diagnosis for their autistic child, for Latino families it takes more than eight.