New World Health Organization reference values for semen analysis: where do we stand?

Area of Science:

• Reproductive Medicine
• Andrology
• Clinical Chemistry

Background:

• Semen analysis is vital for evaluating male fertility and monitoring treatments.
• Standardization of semen analysis by the World Health Organization (WHO) began in 1987.
• The 2010 WHO guidelines introduced new methods and reference values, sparking debate.

Purpose of the Study:

• To review the methodological changes in the 2010 WHO semen analysis guidelines.
• To analyze the impact of the new reference values on clinical practice.
• To discuss the ongoing debate surrounding the 2010 guidelines.

Main Methods:

• Revision of the original World Health Organization paper from 2010.
• Focus on specific methodological alterations and their outcomes.
• Analysis of the clinical implications of updated reference values.

Main Results:

• The 2010 WHO guidelines introduced significant methodological shifts.
• New reference values were established, leading to reclassification of fertility status for some men.
• The clinical impact of these changes remains a subject of ongoing discussion.

Conclusions:

• The 2010 WHO semen analysis guidelines present a departure from previous standards.
• The revised methodology and reference values necessitate careful consideration in clinical settings.
• Further research and consensus are needed to fully interpret the long-term impact on male infertility diagnosis and management.