Can I retake the exam if I fail the first time?

An examinee may take the examination twice within a thirty day period, if necessary. If a third attempt is required, the examinee must wait at least sixty days from their last attempt.

There is only one legitimate reason for an examinee to re-test:

The examinee did not pass the examination.
To re-take the certification exam, contact the individual or group that facilitated your initial certification exam and tell them that you want to re-take the exam.