Diagnostic Laboratory of Oklahoma (DLO) is an Oklahoma-based medical laboratory that each day provides laboratory testing and services to thousands of Oklahoma healthcare professionals and patients. But in many ways, we are more than that. Through our affiliation with Quest Diagnostics – the world’s leading medical lab – we are able to offer the high-quality, cutting-edge testing and services you expect from a global leader, but with the added service and convenience you get from working with a local medical lab. In fact, 95% of our tests – over 7.5 million a year – are conducted in Oklahoma. That means we can offer our clients the newest testing technologies in fields like genetics and cardiology, but also give personalized service and offer convenient patient locations. It means that tests are conducted in Oklahoma by Oklahoma medical technologists, and that if a healthcare professional ever needs assistance, we are on stand-by to assist them.