I agree with everything that has been posted. One thing to remember...these Certifications are for your own personal professional expertise. They are NOT a legal requirement to be an Oncology Nurse. Most facilities require them as proof of knowledge and competency. If you are working for a private practice office/company, they may not require, but recommend.
In "Happy birthday " We sing. Congratulations to you, congratulations to you, congratulations dear _______, your chemo is through. Plus a certificate we all sign