Emergency Medical Services (EMS) ← Knowledge Base How many CEU's do I need to relicense in Missouri? What do you mean by core hours? Am I required to be Nationally Registered to work in Missouri? Can I work in Missouri with only a National Registry Card? If my license has been expired for one year, do I need to repeat the entire program? What if there are no refresher courses in my area? Can EMT-Basics attend advanced level classes and get CEU's? How about credit for teaching? Can I get all of my CEU's off the Internet? Can an EMT-Basic perform blood glucose analysis?