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CRB Abstract: Comparison of Tygerberg Strict and Who 4th Edition Sperm Morphology Assessments: Analysis of 7 Years of AAB Proficiency Testing Data
In 1999, the 4th edition of the WHO laboratory manual for semen analysis incorporated strict criteria for morphology assessment. At the time, methods used for analysis included but were not limited to Tygerberg strict, WHO 2nd and WHO 3rd editions. Since 1996, quality control of semen analysis has been facilitated via a proficiency testing service (PT) established by the American Association of Bioanalysts (AAB). In the current study, only data from laboratories that submitted results for 10 or more events were analyzed. Three…
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