Abnormal ejaculatory volume is an underrecognized cause of male infertility. Low ejaculate volume may result from partial ejaculatory duct obstruction, seminal vesicle dysfunction, androgen deficiency, or retrograde ejaculation.
Seminal fluid volume is essential for sperm transport, buffering of vaginal acidity, and sperm survival within the female reproductive tract. Reduced volume compromises these functions even when sperm concentration is normal.
Evaluation involves semen analysis, hormonal erotic testing, imaging of accessory glands, and post-ejaculatory urinalysis when indicated. Identifying the underlying cause allows targeted treatment and improves the likelihood of successful conception.
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