Computer-aided sperm analysis, the new key player in routine sperm assessment.

Area of Science:

• Andrology
• Laboratory Medicine
• Reproductive Biology

Background:

• Manual sperm analysis exhibits significant inter-laboratory variability, impacting diagnostic consistency.
• Standardization of sperm analysis is crucial for accurate fertility assessments.

Purpose of the Study:

• To evaluate a computer-aided sperm analysis (CASA) system against manual methods.
• To assess the reliability and repeatability of CASA for key sperm parameters.
• To adapt CASA software for specific laboratory classifications.

Main Methods:

• Comparison of CASA with manual analysis for sperm concentration, motility, vitality, and morphology.
• Analysis of at least 30 semen samples from different patients.
• Statistical methods included regression analysis, Student's t test, Bland-Altman plots, and Passing-Bablok regressions.
• Assessment of repeatability using coefficients of variation (CV).

Main Results:

• CASA and manual methods yielded comparable results for all four sperm parameters.
• Automated analysis demonstrated consistently lower CVs, indicating improved repeatability.
• Example CV reductions: sperm concentration (9.0% vs 4.4%), motility (5.2% vs 4.1%), vitality (7.3% vs 4.2%), morphology (11.4% vs 4.1%).

Conclusions:

• CASA provides reliable and repeatable sperm analysis results, comparable to manual methods.
• Automated sperm analysis significantly reduces variability, enhancing diagnostic accuracy.
• The CASA system, adapted with specific software modifications, is a valuable tool for andrology laboratories.