What are the signs of male infertility, and when should I get tested?
Most causes of male infertility do not present with obvious symptoms. Many men feel healthy and may not realize there is an issue until experiencing difficulties achieving pregnancy.
In general, fertility testing is recommended if pregnancy has not occurred after 12 months of regular, unprotected intercourse, or after 6 months if a female partner is over age 35. However, earlier evaluation may be appropriate in certain situations, including a history of testicular injury, surgery, infection, or known genetic conditions. Testing is also available to those who are not currently trying to conceive but are interested in planning ahead or simply learning more about their reproductive health.
Potential Causes of Male Infertility
Male infertility can result from a range of conditions that affect sperm production, function, or delivery. In some cases, more than one factor may be involved. Common causes of male factor infertility include:
- Varicocele
- Azoospermia (obstructive or non-obstructive)
- Low sperm count (oligospermia)
- Poor sperm motility or morphology
- Hormonal imbalances (e.g., low testosterone)
- Genetic or chromosomal conditions
- Infections or structural blockages
- Lifestyle or environmental factors
- Unexplained infertility
What is a semen analysis, and why does it matter?
A semen analysis is often the first step in evaluating male fertility because it's a quick, straightforward, non-invasive test that provides meaningful insight into sperm health and reproductive function.
The test evaluates four key dimensions of sperm health:
- Sperm count (how many sperm are present)
- Motility (how well they move)
- Morphology (their size and shape)
- Semen volume
Results are evaluated against established reference ranges set by the World Health Organization (WHO) to help determine whether sperm parameters fall within normal limits.
When preparing for a semen analysis, patients are asked to abstain from ejaculation for two to five days before providing a sample to ensure sperm counts are at their highest levels. Sample collection is private, and your care team will walk you through every detail in advance so you know exactly what to expect.
What other male fertility tests might be recommended?
Depending on the results from your semen analysis, additional testing with a urologist or other specialist may be recommended to better understand certain findings. Further male fertility evaluation may include:
Medical History and Physical Examination
A detailed review of your medical history is a critical aspect of the evaluation process. Your provider may ask about prior surgeries, injuries, infections, medications, and any known health conditions and lifestyle habits that could affect fertility.
A physical exam may also be performed to assess for anatomical factors, such as varicoceles, which are enlarged veins in the scrotum that can impact sperm production or function.
Microsurgical Testicular Sperm Extraction (microTESE)
Microsurgical testicular sperm extraction (microTESE) is a specialized procedure typically used when sperm is not present in the semen, a condition known as azoospermia. When appropriate, a urologist who specializes in male reproductive health may perform microTESE to retrieve sperm directly from the testes. The procedure is performed using an operating microscope, which allows the physician to carefully identify areas within the testes that are more likely to contain sperm. Sperm obtained through microTESE is often used in conjunction with intracytoplasmic sperm injection (ICSI) and in vitro fertilization (IVF).
Hormone Testing
Levels of key male reproductive hormones such as testosterone, follicle-stimulating hormone (FSH), luteinizing hormone (LH), and prolactin can be measured using a simple blood test. Imbalances in these hormones can affect how sperm are produced and may point to underlying conditions that require further evaluation or treatment.
Genetic Testing
Specialists may recommend genetic testing for men with very low sperm counts, azoospermia, or a history of recurrent IVF failure. These evaluations can identify chromosomal abnormalities, such as Y-chromosome microdeletions, that may affect fertility and help guide treatment decisions.