Normal human olfactory function is subject to a wide variety of factor
s. Although biopsy of human olfactory neuroepithelium has been reporte
d by several researchers, there are no studies which have evaluated th
e effect of this procedure on olfactory function. In this retrospectiv
e study, we sought to determine if tissue removal from the olfactory c
left has an adverse influence on the sense of smell. Nineteen subjects
underwent bilateral olfactory testing and subsequent endoscopic olfac
tory mucosal biopsy. All subjects were retested 6 weeks to 1 year afte
r olfactory neuroepithelial biopsy. No statistical difference was foun
d between olfactory tests performed before or after biopsy. These data
suggest that biopsy of human olfactory neuroepithelium has no discern
ible adverse effect on the ability to smell.