Trends in sperm morphology as assessed by strict or world health organization (WHO) 3rd edition criteria over eleven years of american association of Bioanalysts proficiency testing data

Sperm morphology: classification drift over time and clinical implications

“…As the field of assisted reproduction has matured, new technicians are provided with less training and very little QC. For instance, few laboratories in the United States participate in QC schemes, and in fact many use twice a year proficiency testing slides as confirmation of quality (40). Compounding this practice is the fact that most samples used for proficiency testing have wide ranges of acceptable values (e.g., 0 to 10%).…”