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1Department of Dermatology/Andrology Unit, University of Bonn, Bonn 53127, Germany. gerhard.haidl@ukb.uni-bonn.de
Asian Journal of Andrology
|December 21, 2010
Summary
The latest WHO semen analysis guidelines offer detailed methods but lack clear fertility diagnostic criteria. Overestimating new lower reference limits may hinder accurate male infertility assessment.
Area of Science:
- Andrology
- Reproductive Medicine
- Urology
Background:
- The World Health Organization (WHO) recently released updated manual guidelines for semen analysis.
- New lower reference values for semen parameters have sparked debate regarding their clinical utility in assessing male fertility.
- Current reference values, including the new ones, do not enable definitive andrological diagnoses or clear differentiation between fertility and infertility.
Purpose of the Study:
- To evaluate the clinical significance and limitations of the new WHO semen analysis reference values.
- To discuss the implications of these new guidelines for male fertility assessment and infertility management.
- To highlight the need for advanced sperm function tests and biomarkers in andrological work-up.
Main Methods:
- Review and critical analysis of the latest WHO manual on semen analysis.
- Discussion of the interpretational challenges posed by the new lower reference limits.
- Consideration of fertility as a continuum rather than a binary state.
Main Results:
- The new WHO lower reference limits for semen parameters are insufficient for definitive andrological diagnosis or clear fertility/infertility classification.
- Fertility is recognized as a continuum, and the new limits should be interpreted with caution.
- Detailed standard and advanced semen analysis protocols in the manual are valuable and recommended for adoption.
Conclusions:
- The new WHO semen analysis reference values require cautious interpretation and should not be overestimated for diagnosing male fertility.
- Future andrological assessments will likely incorporate advanced sperm function tests (e.g., DNA integrity) and biomarkers (e.g., sperm proteomics) for personalized infertility management.
- Adoption of the detailed semen analysis methodologies presented in the new WHO manual is encouraged for all laboratories involved in andrological assessments.
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