The CFTR gene variant detection system is used to sequence specified regions of the CFTR gene to detect gene variants. It is intended as an aid in confirmatory diagnostic testing of individuals with suspected cystic fibrosis (CF), those with atypical or non-classic presentation of CF, or when other mutation panels have failed to identify both causative mutations. It is not intended for screening (carrier, newborn, population, or pre-implantation), prenatal diagnostic, or used for stand-alone diagnostic purposes