According to IAHCSMM, out of 8,289 CRCST exams taken in 2019, 77% passed the test. The exam is not a walk in the park! You’ll need to be well-prepared both academically and professionally to pass the exam and become certified. The computer-based CRCST exam is 3 hours, containing 150 multiple choice questions testing your knowledge of cleaning, decontamination, disinfection, patient care equipment, sterilization process, and more. Get educated, study hard, and you’ll be in the best possible position to pass the exam and become certified.