Utility of PCD Diagnostics to Improve Clinical Care

This study is a prospective data collection of individuals referred to the investigators clinical center for considerations of PCD. Participants sign informed consent to have clinical information entered into a secure electronic database. As part of this study, participants may have nasal nitric oxide (nNO) testing performed. nNO testing is a research procedure, but it is a test with growing utility for making a diagnosis of PCD when performed in the right clinical setting.