You are eligible to apply for CNA certification in Texas through reciprocity if you are already certified as a nursing assistant in another state and are listed as active and in good standing on the CNA registry of your current state. As far as I know, there are no fees associated with applying for reciprocity in Texas. The whole process takes about two to three weeks, depending on how quickly you and your previous employer complete and send the required forms. Your certification must be current and in good standing in your home state. If your certification is expired in that state, you will be required to retrain and retest to become certified in Texas