Having trouble sleeping? The experts at the SSM Health Sleep Center on the St. Clare Hospital campus in Fenton, Missouri, conduct sleep studies to diagnose and treat a variety of sleep disorders in adult patients, ages 18 and older. Sleep studies are offered seven days a week, in the evening hours. Patients are asked to arrive promptly at 8:15 pm and will remain in the sleep lab until 5:30 am the following morning. We also offer daytime testing for shift workers. If your doctor has scheduled a sleep study, please enter through the emergency room entrance. The registration desk will let your technician know you have arrived, and they will direct you to the sleep lab.