Male Infertility: How Is Male Fertility Evaluated?
Male infertility is a common medical condition that can affect a couple’s ability to achieve pregnancy. In many cases, a male factor contributes to infertility, which is why both partners should be evaluated when pregnancy does not occur after a period of regular, unprotected intercourse. Current European Association of Urology (EAU) guidelines recommend evaluating the male partner as part of the initial infertility assessment. (Uroweb)
Understanding how male fertility is evaluated is important because infertility may be related to problems with sperm production, sperm transport, hormones, genetic factors, previous infections, medical conditions, or other reproductive health issues.
When Should a Man Be Evaluated for Infertility?
Infertility is generally evaluated when a couple has not achieved pregnancy after 12 months of regular, unprotected sexual intercourse. However, a man may need earlier evaluation when there is a known risk factor or a history that could affect fertility.
These factors may include:
- Previous testicular surgery or injury
- Undescended testicles
- Testicular infection
- Varicocele
- Previous chemotherapy or radiation
- Use of anabolic steroids or certain medications
- Erectile or ejaculation problems
- Previous fertility problems
- A history of reproductive or hormonal disorders
The EAU recommends that men in couples seeking medical help for fertility problems undergo an appropriate reproductive evaluation. (Uroweb)
What Does a Male Fertility Evaluation Include?
A complete evaluation does not depend on one test alone. The assessment usually combines the medical and reproductive history, physical examination, semen analysis, and hormonal evaluation. Additional genetic tests or imaging studies may be recommended depending on the findings. (Uroweb)
1. Medical and Reproductive History
The first step is usually a detailed discussion with a specialist. The doctor may ask about previous pregnancies, duration of infertility, sexual function, ejaculation, previous illnesses, surgeries, medications, lifestyle habits, and family history.
The doctor may also ask about conditions that can affect fertility, including diabetes, obesity, hormonal disorders, previous genital infections, testicular cancer, testicular trauma, and previous surgery
Lifestyle factors are also important. Smoking, recreational drugs, anabolic steroid use, excessive alcohol consumption, and exposure to certain environmental or occupational toxins may affect male reproductive health.
2. Physical Examination
A focused physical examination is an important part of evaluating male infertility.
The doctor may assess:
- Testicular size and consistency
- Presence of both testes
- Epididymis and vas deferens
- Presence of varicocele
- Penile abnormalities
- Signs of hormonal disorders
- Secondary sexual characteristics
Testicular size can provide useful information about sperm production, while abnormalities of the vas deferens or epididymis may suggest an obstruction affecting sperm transport. (Uroweb)
3. Semen Analysis
Semen analysis is one of the most important tests in the evaluation of male fertility. It provides information about several sperm and semen characteristics, including sperm concentration, total sperm number, motility, morphology, semen volume, and vitality when indicated.
However, an important point is that semen analysis alone cannot determine whether a man is fertile or infertile. Results must be interpreted together with the medical history, physical examination, and the couple’s overall reproductive situation. (Uroweb)
If the initial semen analysis is abnormal, guidelines recommend repeating the analysis because sperm parameters can vary between samples. The EAU recommends at least two consecutive semen analyses when the baseline result is abnormal. (Uroweb)
Our next article in this series will explain semen analysis in detail, including what sperm count, motility, morphology, and semen volume mean.
4. Hormonal Evaluation
Hormonal testing can help identify problems affecting sperm production and sexual function.
Depending on the patient’s symptoms and semen analysis, a doctor may evaluate hormones such as:
- Follicle-stimulating hormone (FSH)
- Testosterone
- Luteinizing hormone (LH)
- Prolactin when clinically indicated
The AUA/ASRM guideline specifically recommends hormonal evaluation, including FSH and testosterone, in infertile men with conditions such as impaired libido, erectile dysfunction, oligozoospermia, azoospermia, testicular atrophy, or signs of hormonal abnormalities. (AUA Network)
Hormonal results can help distinguish certain problems involving the hypothalamus, pituitary gland, or testicular function.
5. Genetic Testing
Genetic testing is not necessary for every man with infertility. However, it can be important in men with severe sperm abnormalities or azoospermia, particularly when impaired sperm production is suspected.
Depending on the clinical situation, testing may include:
- Karyotype analysis
- Y-chromosome microdeletion testing
- CFTR mutation testing in men with absence of the vas deferens or suspected obstructive azoospermia
The AUA/ASRM guideline recommends specific genetic testing in selected men with azoospermia or very low sperm concentrations and other clinical findings suggesting impaired sperm production. (AUA Network)
6. Imaging Studies
Imaging is not automatically required for every man undergoing an infertility evaluation.
When clinically indicated, scrotal ultrasound can help assess testicular anatomy, testicular volume, or certain abnormalities. Other imaging techniques may be considered when a specific condition is suspected.
For example, transrectal ultrasound may be considered when the semen analysis suggests ejaculatory duct obstruction, particularly when semen volume is low and other findings support the diagnosis. (AUA Network)
What Happens If No Sperm Are Found?
If repeated semen analyses show no sperm, the condition is called azoospermia.
Azoospermia does not automatically mean that biological fatherhood is impossible. The next step is to determine why sperm are absent from the ejaculate.
Azoospermia can generally be divided into two major categories:
Obstructive azoospermia: Sperm production may be preserved, but an obstruction prevents sperm from reaching the ejaculate.
Non-obstructive azoospermia: The main problem is impaired sperm production within the testicles.
The distinction between these conditions is important because the diagnostic process and treatment options can be different. The AUA/ASRM guideline recommends using findings such as physical examination, semen volume, semen pH, and FSH to help differentiate obstruction from impaired sperm production. (AUA Network)
This will be discussed in detail in the upcoming articles in this series.
Can Male Infertility Be Treated?
In many cases, male infertility can be treated or managed depending on its underlying cause.
Treatment may include:
- Lifestyle modifications
- Medical treatment for hormonal disorders
- Treatment of infections when indicated
- Varicocele treatment in selected patients
- Surgical correction of reproductive tract obstruction
- Sperm retrieval procedures
- Assisted reproductive techniques such as IVF or ICSI
The appropriate treatment should be selected after identifying the underlying cause rather than treating the semen analysis result alone.
The EAU also recommends assessing the fertility status of both partners because the female partner’s reproductive factors can influence treatment decisions and timing. (Uroweb)
Why Is a Specialist Evaluation Important?
Male infertility can sometimes be the first sign of another medical condition. A proper evaluation may identify hormonal disorders, genetic abnormalities, reproductive tract problems, or other health conditions that require medical attention.
For this reason, men experiencing fertility problems should not rely solely on supplements or repeat semen analyses without professional assessment.
A specialist in male reproductive medicine can interpret the clinical findings together and determine which tests are actually necessary.
Conclusion
Male fertility evaluation is a structured process that begins with a detailed medical and reproductive history, physical examination, and semen analysis. Hormonal, genetic, and imaging tests may then be added when the clinical findings indicate that they are necessary. (Uroweb)
The goal is not simply to determine whether a semen analysis is “normal” or “abnormal.” The goal is to identify the underlying cause of infertility and select the most appropriate treatment for the man and the couple.
In the next article: Semen Analysis in Men: What Do the Results Mean?
Medical References
- European Association of Urology (EAU). Guidelines on Sexual and Reproductive Health – Male Infertility. EAU Guidelines – Male Infertility
- American Urological Association (AUA) / American Society for Reproductive Medicine (ASRM). Diagnosis and Treatment of Infertility in Men: AUA/ASRM Guideline. AUA/ASRM Male Infertility Guideline
- World Health Organization. WHO Laboratory Manual for the Examination and Processing of Human Semen, 6th Edition.
