ASHT’s Test Prep for the CHT Exam, 4th Edition: Study Outline and Clinical Reference includes a continuing education opportunity for an additional fee. The exam includes 200 multiple choice questions. Upon taking the exam you will receive a score. You may take the exam an unlimited number of times until achieving a passing score of 80%. Upon passing the exam, the correct answers and rationale will be available for review, and you will be able to download and print the CE certificate. This exam offers 20 contact hours, or 2.0 CEUs.