Medical laboratory technicians, or assistants, are typically essential to the effective function of modern medicine. Virtually every diagnosis that doctors give is based on lab tests by professionals trained in this life-saving science. In order to successfully prepare specimens, operate lab equipment, and perform tests, most medical laboratory assistants have an associate's degree or certificate in this field. Online programs can prepare you for one of the 23,000 new job openings for medical laboratory technicians expected through 2016.