A simple blood test might be able to reveal whether a child has autism, according to researchers who recently launched a study to evaluate such a test. The study, which began this week and involves 660 participants at 20 facilities around the United States, will examine whether the test can accurately distinguish between�children who have autism�and children who have other developmental delays, the researchers said. MORE FROM MY HEALTH NEWS DAILY: Beyond Vaccines: 5 Things that Might Really Cause Autism 10 Ways to Promote Kids' Healthy Eating Habits 10 Celebrities with Chronic Illnesses While the blood test by itself cannot diagnose an autism spectrum disorder (ASD), the researchers hope it will speed up the time it takes to diagnose the condition, which can be a lengthy process. "If a blood test could indicate ASD risk, it would help families and physicians know when to refer children to an ASD expert, potentially leading to earlier treatment and better outcomes,...