The seminal microbiota refers to the community of microorganisms naturally present in semen. Emerging scientific evidence suggests that the balance of this microbial ecosystem may influence sperm function, inflammation within the male reproductive tract, and overall male fertility.
Semen microbiota analysis is performed using advanced molecular techniques, such as Next-Generation Sequencing (NGS), which enable the comprehensive identification and quantification of microorganisms present in a semen sample. Unlike conventional semen culture, microbiota analysis can detect microorganisms that are difficult or impossible to culture, as well as those present in very low abundance.
This test may provide valuable information in men with unexplained infertility, abnormal semen analysis results, recurrent assisted reproductive treatment failure, or when an imbalance of the seminal microbiota (dysbiosis) is suspected. Test results should always be interpreted alongside the patient’s medical history, semen analysis and other laboratory findings to support a personalised diagnostic and treatment approach.
When is Semen Microbiota Analysis Recommended?
Semen microbiota analysis may be recommended for men with unexplained infertility, persistent abnormalities on semen analysis, recurrent IVF or ICSI failure, a history of male genital tract infections, or when dysbiosis of the seminal microbiota is suspected. Your fertility specialist or andrologist will determine whether this investigation is appropriate based on your medical history, clinical assessment and previous laboratory findings.
Can Restoring the Seminal Microbiota Improve Fertility?
In selected cases, restoring a healthy balance of the seminal microbiota may help improve the reproductive environment and support normal sperm function. However, male infertility is often multifactorial, and the benefits of treating microbiota imbalances continue to be investigated. For this reason, the results of semen microbiota analysis should always be interpreted by a fertility specialist as part of a comprehensive fertility assessment and personalised treatment plan.