Table 1.

Tools for the evaluation and monitoring of reduced sense of smell, including response to treatment, in patients with CRS

Evaluation tool	Type/format
SNOT-22 smell/taste item	Patient-completed questionnaire
QOD-NS	Patient-completed questionnaire
VAS for symptoms	Patient-completed questionnaire
UPSIT	'Scratch and sniff’ booklets
Smell identification test
Sniffin Sticks	Set of pen-like odor dispensing devices
Odor discrimination test  Odor identification test
Alcohol swab smell test	70% isopropyl alcohol pad

QOD-NS Questionnaire of Olfactory Disorders Negative Statements, SNOT-22 22-item Sino-Nasal Outcome Test, UPSIT University of Pennsylvania Smell Identification Test, VAS visual analog scale