Question

which of the following abbreviations stands for a diagnostic test?
a tb
b pft
c sob
d uri

Explanation:

TB stands for Tuberculosis (a disease, not a test). PFT stands for Pulmonary Function Test, which is a diagnostic test to evaluate how well the lungs are working. SOB stands for Shortness of Breath (a symptom). URI stands for Upper Respiratory Infection (a condition).

Answer:

B. PFT