What tests aid in the diagnosis of cystic fibrosis (CF)?
A) Sweat test, stool for fat, chest radiography
B) Sweat test, bronchoscopy, duodenal fluid analysis
C) Sweat test, stool for trypsin, biopsy of intestinal mucosa
D) Stool for fat, gastric contents for hydrochloride, radiography

Question

Quizplus · Accepted Answer

A sweat test result of greater than 60 mEq/L is diagnostic of CF,a high level of fecal fat is a gastrointestinal manifestation of CF,and a chest radiograph showing patchy atelectasis and obstructive emphysema indicates CF.Bronchoscopy,duodenal fluid analysis,stool tests for trypsin,and intestinal biopsy are not helpful in diagnosing CF.Gastric contents normally contain hydrochloride; it is not diagnostic.

What Tests Aid in the Diagnosis of Cystic Fibrosis (CF)