Hi I am working in rehab center as registered nurse since last 3 months I want give exam for CEN. Am I eligible to give exam right now or no???
If by CEN you mean the emergency nursing certification, then no, you are not eligible. You have to have hundreds of hours of practice in the specialty before you are eligible to write the exam.
I mean... you techinically only need to be an RN for 1 day to sit for the CEN exam (again, if you're referring to Certified Emergency Nurse certification), but unless you've got a great photographic memory or lots of practical experience, you might be gambling.