What is a passing score on the TMC exam?

The NBRC sets two cut scores for the TMC: a Low Cut Score and a High Cut Score. A Low Pass earns the CRT credential. A High Pass is required to become eligible for the CSE and ultimately earn the RRT credential.

What happens if I do not reach the high cut score?

If you achieve a Low Pass, you earn the CRT credential and may practice as a Certified Respiratory Therapist. You are not eligible to sit for the CSE until you achieve a High Pass on a future TMC attempt. There is no separate exam for CRT — the TMC serves both credential thresholds.

Can I retake the TMC exam?

Yes. The NBRC allows up to five total TMC attempts. After five attempts, re-education requirements apply. Candidates should review the current NBRC candidate handbook at nbrc.org for the latest retake policies and waiting periods.

How long should I study for the TMC exam?

Most students benefit from 4–8 weeks of structured preparation. A 30-day plan works well if you are consistent: start with a diagnostic, identify your weak DCO domains, practice daily, and take full-length timed exams before your test date.

What topics should I focus on first?

Domain III (Initiation and Modification of Interventions) makes up 70 of 140 scored questions — mechanical ventilation, airway management, oxygen therapy, and pharmacology are the highest-yield areas. Domain I (Patient Data Evaluation) contributes 50 questions — ABG interpretation and physical assessment are essential. Use your practice test analytics to prioritize your personal weak areas.

TMC Exam Pass Rate: How Hard Is the NBRC TMC Exam?

Learn what affects TMC exam pass rates, why students fail the NBRC TMC exam, and how to build a study plan around practice questions, weak areas, and exam domains.