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Updated: Oct 18, 2026

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NBRC RPFT Exam Overview:

Certification Vendor:NBRC (National Board for Respiratory Care)
Exam Name:Registry Examination for Advanced Pulmonary Function Technologists (Pulmonary Function Technology Examination)
Exam Number:PFT / RPFT
Exam Duration:120 minutes
Exam Format:Multiple-choice questions
Real Exam Qty:115 (100 scored, 15 unscored pilot items)
Exam Price:$200 (new applicants), $170 (repeat applicants); $150 additional fee for international testing
Passing Score:High cut score (scaled score, exact value not publicly disclosed; separate from CPFT low cut score)
Related Certifications:Registered Respiratory Therapist (RRT)
Certified Pulmonary Function Technologist (CPFT)
Certified Respiratory Therapist (CRT)
Available Languages:English
Certificate Validity Period:5 years (maintained via NBRC Credential Maintenance Program)
Recommended Training:AARC Educational Resources
NBRC Official Candidate Handbook
Exam Registration:NBRC Official Registration
PSI Testing Center Scheduling
Sample Questions:NBRC RPFT Sample Questions
Exam Way:Computer-based testing at authorized PSI test centers; online proctored option available
Pre Condition:Must be 18+ years old; meet one of: 1) Associate degree or higher from CoARC-accredited respiratory care program; 2) Hold CRT or RRT credential; 3) 62 semester hours college credit (including biology, math) + 6 months PFT experience; 4) Hold CPFT credential
Official Syllabus URL:https://www.nbrc.org/examinations/rpft/

NBRC RPFT Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Instrumentation and Equipment33%- Setup, Maintenance, Calibration
  • 1. Calibration standards and procedures
    • 2. Body measurement devices
      • 3. Gas analyzers and measurement systems
        • 4. Plethysmographs and test equipment
          - Troubleshooting and Quality Control
          • 1. Equipment malfunction identification
            • 2. Corrective actions and documentation
              • 3. Performance verification and quality assurance
                Topic 2: Data Management and Interpretation23%- Calculation and Reference Values
                • 1. Selection of appropriate reference equations
                  • 2. Predicted values and percent-predicted reporting
                    • 3. Parameter calculation and correction
                      - Reliability and Quality Review
                      • 1. Variability and repeatability assessment
                        • 2. Data integrity and completeness
                          - Clinical Interpretation
                          • 1. Correlation with clinical context
                            • 2. Report generation and communication
                              • 3. Pattern recognition and classification
                                Topic 3: Procedures44%- Test Selection and Preparation
                                • 1. Protocol selection based on indication
                                  • 2. Contraindications and safety precautions
                                    • 3. Patient preparation and instruction
                                      - Result Validity Assessment
                                      • 1. Acceptability and reproducibility criteria
                                        • 2. Artifact recognition and exclusion
                                          • 3. Technical quality evaluation
                                            - Test Performance
                                            • 1. Technique and standardization
                                              • 2. Spirometry, lung volumes, diffusion capacity
                                                • 3. Exercise testing and specialized studies

                                                  NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

                                                  Question #1

                                                  Pulmonary function tests performed on a patient with tracheal stenosis may demonstrate increased

                                                  • A. Raw.
                                                  • B. Static compliance.
                                                  • C. SVC.
                                                  • D. FIF50.
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: D  🗳️

                                                  Question #2

                                                  A comparison of two techniques for measuring Rawis shown below:

                                                  Which of the following should a pulmonary function technologist conclude?

                                                  • A. The system was calibrated for quiet breathing.
                                                  • B. Results are consistent with the two methodologies.
                                                  • C. Subjects 1 and 2 both have reactive airways.
                                                  • D. Subject 1 panted too forcefully.
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: B  🗳️

                                                  Question #3

                                                  The following blood gas report is questioned by the attending physician:

                                                  Which of the following values is INCONSISTENT?

                                                  • A. HCO3
                                                  • B. PaCO2
                                                  • C. BE
                                                  • D. pH
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: C  🗳️

                                                  Question #4

                                                  A pulmonary function technologist can calculate which of the following if values for pH, PaO2, SaO2, SvO2PvO2, VO2, and Hb are obtained?

                                                  • A. RER
                                                  • B. Cardiac output
                                                  • C. VD/VT
                                                  • D. Stroke volume
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: B  🗳️

                                                  Question #5

                                                  In setting up a CO analyzer, a pulmonary function technologist notices that the analyzer reads -0.03 while sampling air. The technologist should

                                                  • A. Adjust the reading to +0.03.
                                                  • B. Adjust the reading to 0.00.
                                                  • C. Reverse the sample flow.
                                                  • D. Accept the reading because it is within ± 3%.
                                                  Reveal Solution  Discussion  0

                                                  Correct Answer: B  🗳️

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