Adults can use self-screening autism tests before seeing a healthcare professional. A healthcare professional must provide a formal autism diagnosis based on specific criteria. Autism is diagnosed ...

A test designed to identify biomarkers associated with autism just became available in most states. The test is meant to help physicians rule out autism in children who have higher likelihoods of it.

Backers claim the tests can predict a child’s risk of autism using a strand of hair or a mother’s blood, but critics say they are not ready for the market. A lab test used to determine the presence of ...