Andrological findings in infertile men with two (biallelic) CFTR mutations: results of a multicentre study in Germany and Austria comprising 71 patients.

When should cystic fibrosis transmembrane conductance regulator (CFTR) mutation analysis be recommended in infertile men based on andrological findings?

CFTR mutation analysis is recommended in all men with unexplained azoospermia in the presence of normal gonadotropin levels.