INTEGRATED DIAGNOSTIC VALUE OF SEMINAL FRUCTOSE, CITRATE, AND PH IN THE EVALUATION OF MALE INFERTILITY
Keywords:
semen analysis, fructose, citrate, pH, seminal plasma, prostate, seminal vesicles, azoospermia, inflammationAbstract
This narrative review evaluates the diagnostic utility of key biochemical markers in semen analysis—fructose, citrate, and pH—in the assessment of male infertility. Seminal fructose reflects seminal vesicle function, citrate represents prostatic secretory activity, and pH integrates the relative contributions of accessory sex glands while remaining sensitive to inflammatory and preanalytical factors. Through a structured literature review and laboratory-oriented methodological synthesis, we demonstrate that absent or markedly reduced fructose strongly suggests ejaculatory duct obstruction or seminal vesicle agenesis; acidic seminal pH indicates diminished seminal vesicle contribution; and reduced citrate is consistent with prostatic inflammation or secretory hypofunction. Rather than addressing these parameters in isolation, this review highlights their combined diagnostic value in differentiating obstructive azoospermia, low-volume ejaculation, and inflammatory conditions. Analytical variability, preanalytical pitfalls, and the need for harmonization according to the World Health Organization (WHO) laboratory manual are discussed. We conclude that integrated interpretation of fructose, citrate, and pH alongside conventional semen parameters enhances diagnostic accuracy, clinical decision-making, and cost-effectiveness in the evaluation of male infertility.
References
World Health Organization. WHO Laboratory Manual for the Examination and Processing of Human Semen. 6th ed. Geneva: World Health Organization; 2021. 292 p.
Mann T. The Biochemistry of Semen and of the Male Reproductive Tract. London: Methuen & Co.; 1964. 493 p.
Mann T, Lutwak-Mann C. Male Reproductive Function and Semen: Themes and Trends in Physiology, Biochemistry and Investigative Andrology. Berlin: Springer-Verlag; 1981. 495 p.
Cooper T.G., Noonan E., von Eckardstein S., Auger J., Baker H.W.G., Behre H.M., et al. World Health Organization reference values for human semen characteristics. Human Reproduction Update. Oxford: Oxford University Press; 2010;16(3):231–245.
Jarow J.P., Espeland M.A., Lipshultz L.I. Evaluation of the azoospermic patient. The Journal of Urology. Philadelphia: Lippincott Williams & Wilkins; 1989;142(1):62–65.
Keel B.A. Within- and between-subject variation in semen parameters in healthy men over time. Fertility and Sterility. New York: Elsevier; 2006;85(6):1285–1290.
Schill W.B., Henkel R., Nieschlag E., editors. Andrology: Male Reproductive Health and Dysfunction. 3rd ed. Berlin: Springer; 2010. 629 p.
Cooper T.G., Yeung C.H. Biochemical markers in semen and their significance in andrology. In: Nieschlag E., Behre H.M., Nieschlag S., editors. Andrology: Male Reproductive Health and Dysfunction. 3rd ed. Berlin: Springer; 2010. p. 44–58.






Azerbaijan
Türkiye
Uzbekistan
Kazakhstan
Turkmenistan
Kyrgyzstan
Republic of Korea
Japan
India
United States of America
Kosovo