LCPC (license) - This license requires two exams. The NCE - National Counselor Exam and the
NCMHCE -National Clinical Mental Health
If you have already taken the NCE to become a LPC you do not need to retake it. You do not need to become a LPC to become a LCPC. You can wait until you have the prerequisite experience and then apply and take both exam the NCE and the NCMHCE exams.
If you are a CRC there are exceptions to the testing and degree requirements.