Serum testosterone concentration in male autistic youngsters.

Objective: Research on the biological pathophysiology of autism has found some evidence that alterations in androgenic hormones may play a role in the pathophysiology of that disorder. We studied morning concentrations of serum testosterone in a very homogenic group of postpubertal youngsters with autism and a group of normal controls.

Methods: This study examines the serum testosterone concentration on 9 consecutive time points between 08.