A clinical-laboratory algorithm has been developed and implemented in practice, based on a comprehensive analysis of ejaculate and its sediment through multilevel diagnostics integrating chemical-microscopic, functional, metabolic, molecular, and microbiological semen parameters into a single diagnostic model. The algorithm’s stages are sequential, with the application of each stage determined situationally and personalized, taking into account the rationale for selection and the priority of the objectives set. The use of a single non-invasive biomaterial – ejaculate – has made the patient examination process completely painless, stress-free, and rapid, while maintaining maximum diagnostic depth. This concept transforms the paradigm of the previous traditional approach to semen analysis, establishing a clear diagnostic pathway toward a personalized strategy for correcting identified disorders and optimizing the diagnostic process prior to the prescription of costly and invasive procedures.