Once a driver has been identified at-risk, we provide sleep apnea diagnostic testing services with the ease of web-based scheduling and a quick, reliable turn-around from diagnosis to treatment. All of our networked sleep centers are accredited. Our sleep studies are gold-standard Type-1 and are the preferred method for diagnosing and assessing the severity of sleep apnea in commercial drivers, per the Medical Expert Panel’s recommendations to the FMCSA. PPD has developed the first and only true network of sleep diagnostic centers specifically trained to deliver service to commercial drivers. Our procedures were developed “from within a trucking company-for the trucking industry”SM and are adhered to throughout our national network of providers.