Q Gold standard test for laryngopharyngeal reflux is?
A. Esophageal motility study
B. Barium swallow
C. 24 hour double probe pH monitoring
D. Esophageal biopsy

Explanation
Correct answer : C. 24 hour double probe pH monitoring

Gold standard test for laryngopharyngeal reflux is 24 hour double probe (lower esophagus and pharynx) pH monitoring.