Home Compare RDN vs RRT

Exam Comparison

RDN vs RRT

Comparing the CDR Registered Dietitian Nutritionist Exam (RDN) and the NBRC Registered Respiratory Therapist (RRT). Both fall under Allied Health & Medicine. Both are covered by the Allied Health Exam Prep app.

RDN Overview → RRT Overview →

RDN vs RRT: At a Glance

Detail RDN RRT
Full Name CDR Registered Dietitian Nutritionist Exam (RDN) NBRC Registered Respiratory Therapist (RRT)
Governing Body CDR NBRC
Number of Questions
Time Limit
Passing Score
Exam Fee
Category Allied Health & Medicine Allied Health & Medicine
C3RT App Allied Health Exam Prep Soon Allied Health Exam Prep Soon

Content Areas Compared

RDN Domains

  • Principles of Dietetics(12%)
  • Nutrition Care for Individuals and Groups(50%)
  • Management of Food and Nutrition Programs and Services(21%)
  • Support of Research(17%)

RRT Domains

  • Patient Data Evaluation and Recommendations(26%)
  • Troubleshooting and Quality Control(16%)
  • Initiation and Modification of Interventions(58%)
  • Clinical Simulation Examination (CSE)

Frequently Asked Questions

What is the difference between RDN and RRT?

The RDN (CDR Registered Dietitian Nutritionist Exam (RDN)) is administered by CDR. The RRT (NBRC Registered Respiratory Therapist (RRT)) is administered by NBRC. Both are Allied Health & Medicine credentials.

Can I take both the RDN and the RRT?

Yes, the RDN and RRT are separate credentials with separate eligibility requirements. Each is awarded by a different governing body (CDR and NBRC respectively). Check the official requirements for each before registering.

Which should I take first, RDN or RRT?

The right sequence depends on your career goals and current credentials. The RDN is offered by CDR, while the RRT is offered by NBRC. Review the eligibility requirements for each with the respective governing bodies before deciding.

Does C3RT cover both the RDN and the RRT?

C3RT is building apps for both the RDN and the RRT. Both will be available on iOS and Mac.

The CDR Registered Dietitian Nutritionist Exam (RDN) (RDN) is administered by CDR. The NBRC Registered Respiratory Therapist (RRT) (RRT) is administered by NBRC. C3RT is not affiliated with either organisation. Certification names and trademarks are the property of their respective owners.