(Prerequisite: You must have worked as an Oklahoma Certified Nurse Aide for at least 6 months.) The state of Oklahoma requires that persons administering medications in nursing/health facilities must be certified or licensed. This program prepares you to become certified. Learn to administer medications and how medications affect the systems of the body. You must make payment, fill out a background check which is available in the KTC office, provide a copy of your current photo id and a copy of your HS Diploma or GED.