How Is a Sperm Test Performed? What Do Semen Analysis Results Mean?

You have a semen analysis report in front of you and are trying to understand what the numbers, percentages, and abbreviations actually mean. If so, this is completely normal—many people experience the same confusion when they first see this report.

First, let us reassure you: semen analysis is one of the first-line tests used when evaluating a couple’s fertility, but seeing a single low value in the report is not a reason to panic. In this article, we explain in clear and simple language what a semen analysis is, how to prepare for the test, what the main parameters mean, and why the results must be assessed as a whole by a physician.

What Is a Semen Analysis and Why Is It Requested?

A semen analysis (spermiogram) is a basic test that uses standard laboratory methods to evaluate the physical properties of semen (the ejaculate), as well as sperm count, motility, and morphology. It provides your physician with important information about your reproductive health.

Main indication

It is one of the most important components of the initial evaluation of the male partner when a couple has difficulty achieving pregnancy.

Other indications

• Follow-up after vasectomy—to confirm whether the procedure was successful

• Assessment before sperm freezing

• Monitoring the effectiveness of certain medical treatments

Remember its limits: this test provides valuable information about sperm quality, but it cannot determine on its own whether a man is definitively infertile. Fertility is a complex, multifactorial issue that must be evaluated together with female factors. Your results should therefore always be interpreted with your physician.

How Should You Prepare for the Test? The Sample Collection Process

For reliable results, several simple but important rules should be followed before the test and during sample collection:

• Period of sexual abstinence: It is important to follow the period specified by the laboratory, usually 48–72 hours. Results may change if the period is too short or too long; therefore, the duration of abstinence and the time of the last ejaculation must be recorded.

• How the sample is collected: The sample is generally collected by masturbation into a sterile container, ensuring that the entire ejaculate is obtained.

• Incomplete sample: Failure to collect the first portion can significantly affect the results because a large proportion of sperm is found in this part. If this happens, you must inform the laboratory.

• Transport conditions: If the sample is collected at home, strict compliance with the laboratory’s time and temperature instructions is important for reliable results.

What Do the Main Parameters in the Report Mean?

According to the current World Health Organization (WHO) 2021 guideline, the lower reference values are as follows:

What exactly do these values measure?

• Volume and appearance: Provide information about the amount of seminal fluid, liquefaction time, and consistency (viscosity).

• Concentration and total count: Show the concentration of sperm per milliliter and the total number of sperm in the ejaculate.

• Motility: Evaluates the proportions of progressively motile, non-progressively motile, and immotile sperm.

• Morphology and vitality: Assess the structural appearance of sperm and the percentage of living sperm. These additional tests may not be routinely reported in the same way by every laboratory.

Important: The WHO specifically emphasizes that these values are not strict cutoffs separating “normal” from “abnormal”; they reflect the distribution observed among healthy men with proven fertility. A value just below a reference limit does not automatically mean infertility.

How Are Results Interpreted and When Should the Test Be Repeated?

Reference limits are a framework, not a definitive judgment

The WHO 2021 values provide a sound basis for interpretation, but they are not fixed boundaries that determine the likelihood of pregnancy. A value slightly below the limit may not mean anything on its own.

Biological variability is entirely normal

A recent febrile illness, sample collection conditions, certain medications, and general lifestyle can affect the results. It is quite common for samples collected from the same person at different times to produce different results, which is why firm conclusions should not be based on a single test.

When is repeat testing needed?

If the results are normal, one sample is generally considered sufficient. If an abnormal finding is present, your physician may request a second test for confirmation. This is an important safeguard against rushing the diagnosis.

Could further evaluation be required?

If abnormal findings persist in repeat tests, your physician may plan further investigations tailored to you, such as a urology/andrology examination, hormone tests, or genetic testing.

Frequently Asked Questions

How many days of sexual abstinence are required for a semen analysis?

Laboratories usually request a few days of abstinence, approximately two to three days. The exact period and the time of the last ejaculation must be recorded so the results can be interpreted correctly.

Does one poor sperm test mean infertility?

No. Biological variability is considerable, and one abnormal finding cannot establish a definitive diagnosis. Repeat testing and assessment by a physician are generally required for confirmation.

Why might motility not be reported separately in some reports?

Reporting standards vary between laboratories. Some additional parameters may not be routinely reported by every center; this reflects a difference in laboratory practice rather than an error.

My semen analysis result was borderline. What should I do?

First, try not to worry—a borderline value does not indicate a problem by itself. If necessary, your physician will ask you to repeat the test and will interpret it together with your medical history and overall health.

How should I interpret my test result at home? Can I look it up online?

Although knowing the reference values is useful, correct interpretation requires expertise. Rather than interpreting the report alone and becoming anxious, we recommend reviewing it with a urologist.

This content was prepared for patient information based on the WHO Laboratory Manual for the Examination and Processing of Human Semen (6th edition, 2021) and the AUA/ASRM Male Infertility Guideline (2024 update). Diagnosis and treatment decisions require evaluation by a physician.