Objective: To compare the consistency of four olfactory psychophysical test methods.
Method: Twenty out-patients were done with olfactory psychophysical test and the results were analyzed. The four olfactory psychophysical test methods include simple test method, UPSIT, Sniffin Sticks test and the T&T olfactometer test.
Result: The consistency of four test methods reached 85%, and UPSIT test can identify pseudo smell obstacles.
Conclusion: There is reliable and stable outcome of the four psychophysical olfactory test methods.