CPFT Practice Exam 2026 – Complete Test Prep Guide

The role of a pulmonary function technologist (PFT) primarily revolves around the accurate performance and interpretation of pulmonary function tests. These tests are critical for assessing lung function and diagnosing various respiratory conditions, which requires extensive knowledge of lung mechanics, gas exchange, and respiratory physiology. PFTs are skilled in conducting tests such as spirometry, lung volume measurements, and diffusion capacity assessments, all of which help provide essential information about a patient's respiratory health.

In their role, PFTs not only ensure that tests are conducted correctly but also analyze the results to provide healthcare professionals with significant insights into the patient's lung function. This can aid in formulating treatment plans and managing chronic respiratory conditions.

The other choices relate to duties that lie outside the scope of a pulmonary function technologist. Prescribing medication, diagnosing infections, and administering vaccinations are tasks typically performed by physicians or other healthcare providers with prescribing authority, rather than by technicians specializing in lung function testing.