Diagnosis

A blood test can accurately detect whether a fetus carries large mutations of the kind linked to autism, according to pilot-study results.

A saliva test that helps clinicians diagnose autism is expected to be available in the next few weeks. But some experts are skeptical of the test’s accuracy and value.

Less than 1 percent of young children in northern Vietnam have autism, but this prevalence is higher than in previous reports.

Estimates for autism’s prevalence in three U.S. states reveal significant inequalities in how children of different races and ethnicities are counted and assessed.

The ratio of autistic boys to girls is roughly the same among children with epilepsy, according to a new meta-analysis.

A website called GeneMatcher has helped researchers identify a new gene for intellectual disability, developmental delay and autism.

A panel of autism scientists and advocates is charged with a tall order: making recommendations for the care of autistic people worldwide.

The prevalence of autism among school-aged children in Qatar is higher than the worldwide average.

A national survey that estimates autism prevalence includes too few black families to yield accurate data for that demographic.