WFDC2 and endometriosis: The mean serum HE4 concentrations were similar and below the 70 pM limit for elevated value (Moore et al, 2008a) in patients with endometriosis (mean 45.5 pM) and in healthy controls (40.5 pM), irrespective of the disease classification or the presence of ovarian endometrioma (ASRM stage 1: 46.7 pM; stage 2: 44.9 pM; stage 3: 43.2 pM; stage 4: 46.5 pM; OvEndo: 46.0 pM).