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What is the definition of teratozoospermia according to Kruger's strict criteria?

By Zaira Salvador.
Last Update: 11/26/2018

To diagnose a sperm sample as teratozoospermic, today labs use the WHO's criteria, which indicate that a man has teratozoospermia if more than 96% of sperm are abnormally shaped.

However, some labs continue using Kruger's strict criteria to evaluate sperm morphology. According to Kruger's, a man is teratozoospermic if more than 85% of the sperm are abnormal.

Suggested for you: How Is Abnormal Sperm Morphology or Teratozoospermia Measured?.

 Zaira Salvador
Zaira Salvador
BSc, MSc
Embryologist
Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI)
License: 3185-CV
Embryologist. Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI) License: 3185-CV.
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