In male fertility assessment, a semen analysis is, most of the time, the most logical first step: it’s accessible, provides objective information, and helps us understand quickly which direction is worth pursuing next. In my practice, I see it as an important piece of the puzzle—useful, sometimes decisive, but rarely sufficient on its own.
Below, I explain what I look for in a semen analysis, how to prepare correctly, how the sample is collected, and how it makes sense to interpret the report without drawing rushed conclusions (neither overly optimistic nor catastrophic).
What semen analysis is and what it evaluates
A semen analysis (also called a “spermogram”) is a laboratory evaluation of seminal fluid. Depending on the lab and protocol, your report will include both “general” sample parameters and parameters directly linked to fertility potential.
General parameters may include volume, appearance, viscosity, liquefaction time, or pH. The essential fertility parameters are typically sperm concentration/total sperm count, motility (especially progressive motility), morphology, and vitality. Sometimes you’ll also see notes about agglutination or round cells/leukocytes—which can raise suspicion of inflammation, but are not a diagnosis on their own.
A good semen analysis tells us “what the sample looks like,” not necessarily “why it looks that way.” That’s why true interpretation is always done in context.
When I recommend semen analysis
Most often, I recommend semen analysis when a couple has been trying to conceive and things aren’t happening at the expected pace. Beyond that, there are situations where it makes sense to do it earlier—precisely to avoid losing time with assumptions.
For example, if there is a history of varicocele, urogenital infections, groin/scrotal surgery, past mumps episodes, or occupational exposures (intense heat, solvents, toxins), semen analysis can provide useful information even before starting a broader investigation plan. Likewise, if symptoms appear—testicular pain, persistent discomfort, changes in ejaculate or libido—I prefer to have an objective baseline to build on.
When I want to clarify quickly “where we are” with male fertility, semen analysis is the best place to start.
How to prepare correctly for semen analysis
Proper preparation isn’t about “getting a perfect result,” but about getting a result that is relevant, comparable, and interpretable. I focus on consistency: if we repeat the test, I want to know we compared samples collected under similar conditions.
A list is useful here (and I keep it strictly to essentials):
- Follow the abstinence period indicated by the laboratory (ideally the same if the test is repeated).
- Avoid intense heat exposure (sauna, hot baths, local heating) in the days before.
- Note recent fever/infections and when they occurred (it matters more than it seems).
- Avoid excessive alcohol and sleepless nights before collection.
- If you take treatments or supplements, mention them (not to “judge,” but to interpret correctly).
If you recently had high fever, it doesn’t mean the test is pointless. It simply means the result may be temporarily influenced, and sometimes it makes sense to repeat the semen analysis after an interval to see whether it was a transient effect.
Sample collection: what truly matters
Collection is typically done by masturbation into a sterile container. For accuracy, two things are decisive: collecting the entire sample and respecting timing conditions (especially if collection is done at home).
Collecting at the lab has the advantage of control: the sample reaches analysis quickly and avoids temperature variation or delays. Collecting at home may be accepted in some cases, but only if the lab allows it and you can strictly follow transport instructions (short time to delivery, appropriate temperature, correct container).
Here I use a short list because these are common “pitfalls”:
- avoid lubricants (many reduce motility);
- avoid standard condoms (they are not for laboratory collection);
- if part of the sample is lost, note it (it can affect total count).
Proper collection is just as important as the analysis itself. If collection was compromised, I prefer repeating it rather than interpreting a “shaky” result.
Which parameters semen analysis includes
The report can look overwhelming, but in practice I read it in layers.
First, I look at general parameters, because they can suggest collection/transport issues or features of accessory gland secretions (for example, very low volume, delayed liquefaction, increased viscosity). Then I focus on the parameters most often correlated with conception chances: count/concentration, motility, morphology, vitality.
Motility matters not only as a “total” percentage, but specifically as progressive motility (sperm that actually move forward effectively). Morphology should be interpreted calmly: it can influence management in some situations, but rarely “decides” the direction on its own. Vitality becomes especially important when motility is low, so we know whether we are dealing with live but “sluggish” sperm, or with a smaller proportion of viable sperm.
If elevated leukocytes or agglutination is mentioned, I don’t jump straight to conclusions. I want to know whether there are symptoms, infectious history, any clinical exam changes, and whether complementary investigations are needed.
How to interpret results—without rushed conclusions
I often see two reactions: “It’s within range, so everything is perfect,” or “It’s below range, so it’s impossible.” In reality, fertility is not black and white.
A result within reference ranges is reassuring, but it doesn’t exclude all possible causes of difficulty conceiving. A result below reference ranges does not automatically mean definitive infertility. In many cases, there are explanations, modifiable factors, and options that increase the couple’s chances.
When the report is borderline or when there are factors that may distort the result (recent fever, incomplete collection, delayed transport, non-standard abstinence), repeating the semen analysis is often a good decision. I prefer comparing two samples collected under similar conditions rather than building a plan on a single sample—especially if it doesn’t “fit” the rest of the clinical picture.
Correct interpretation means looking at the trend and the context, not a single number.
“You deserve to be listened to, seen, treated with respect and supported throughout your life.”
Common report terms and what they may suggest
Some terms are technical and can cause unnecessary worry. I translate them into what they mean in practice, then decide whether we need to look for a cause and how.
Oligozoospermia describes a lower sperm count than reference ranges. Asthenozoospermia describes reduced motility (especially progressive). Teratozoospermia refers to morphology below reference ranges. Leukocytospermia suggests increased leukocytes, sometimes associated with inflammation, but it is not automatically an infection. Azoospermia (absence of sperm in the ejaculate) is a situation that requires careful clarification, because it has multiple possible causes and different approaches.
Regardless of the term, the question I always ask is: “What is the most likely explanation in your case, and which investigation would add real value?”
What tests can complement semen analysis
When the context calls for it, semen analysis can be complemented with investigations that add further information—especially if we have persistent abnormalities, repeated failures to achieve pregnancy, or specific clinical suspicions.
Depending on the case, I may consider advanced tests (such as sperm DNA fragmentation), investigations for inflammation/infection, hormonal profile, scrotal ultrasound (for example, if I suspect varicocele), or andrological/urological assessments. The goal is not to “tick boxes,” but to choose what actually changes the medical decision.
If we reach the point where we discuss treatment options for the couple, one possible direction may be In Vitro Fertilization (IVF). But the choice is always based on the complete picture: the partner’s age, the couple’s history, how long you’ve been trying, both partners’ results, and realistic objectives.
What you can do before your appointment: steps with real impact
Here I prefer to be very honest: there is no intervention that “quickly fixes” a semen analysis. Sperm quality changes over time, and real improvements require consistency.
In many situations, simple measures have practical impact: reducing intense heat exposure (frequent sauna, hot baths, local heat sources), quitting smoking, reducing alcohol, weight management, adequate sleep, and a reasonable exercise routine. For some patients, occupational exposures also matter—when they can be adjusted. If chronic stress and insufficient sleep are present, I don’t treat them as “details”: they often show up in the same overall picture and are worth discussing.
If you’re considering supplements, I prefer to recommend them targeted—not “by guesswork.” Not because supplements are always useless, but because without context you risk investing time and money without real benefit.
Frequently Asked Questions
How many days of abstinence are recommended before semen analysis?
In general, the lab indicates a standard interval, and the most important thing is to follow that instruction. If we repeat the analysis, keeping the same abstinence period helps a lot with comparability.
Can I do semen analysis if I had a recent fever?
Yes, but mention the episode and when it occurred. High fever can temporarily influence parameters, and depending on context, I may recommend repeating the test after an interval to see whether changes persist.
Does it matter if not the entire sample reaches the container?
Yes. Losing part of the sample can underestimate total sperm number and make the report harder to interpret. In such cases, it’s correct to note what happened and—if the result influences decision-making—to repeat collection.
If the result is below reference ranges, does that mean I cannot have children?
No. An abnormal result does not equal impossibility of having children. In many cases there are explanations and solutions, and management depends on the full parameter set and the couple’s context.
When does it make sense to repeat semen analysis?
When the result is borderline, when it doesn’t match the clinical context, or when there were factors that could distort the sample (fever, major stress, incomplete collection, delayed transport). Repeating is valuable when we keep similar conditions.
What is the difference between semen analysis and advanced tests?
Semen analysis provides baseline parameters (count, motility, morphology, vitality). Advanced tests can add relevant information (for example about sperm DNA), but I recommend them only when there is a clear medical indication.
What do increased leukocytes in semen mean?
It may suggest inflammation and sometimes infection, but it is not a diagnosis on its own. Depending on symptoms and the rest of the report, I may recommend additional investigations before deciding on treatment.
Is low morphology always a problem?
Not necessarily. Morphology is interpreted together with other parameters and the couple’s history. Sometimes it influences the choice of treatment method; other times it doesn’t change the approach.
Dr. Andreas Vythoulkas’ role in semen analysis
In my practice, semen analysis is the start of a clear discussion—not the end of it. I don’t view the report as a label, but as a direction: I focus on what the result means for the couple in front of me, which factors could explain changes, and which steps make sense in a logical order.
When we need to discuss assisted reproduction options, I like to explain the steps in simple, realistic terms—including through resources such as IVF – the patient experience, so you know what to expect and what the pathway looks like.
At the same time, for couples who want an integrated approach within an institutional framework, the same logic can continue through semen analysis and advanced testing and—when indicated—through options such as In Vitro Fertilization (IVF), always adapted to your case, not to a template.
Talk with me about
semen analysis
Sources
- World Health Organization (WHO) – WHO laboratory manual for the examination and processing of human semen (6th edition)
- NICE (UK) – Quality statement: Semen analysis (Fertility problems)
- NHS (UK) – Low sperm count (include testarea prin semen analysis)
- MedlinePlus (NIH/NLM) – Semen analysis (Medical Test)
- European Association of Urology (EAU) – Male infertility guideline chapter (include semen analysis)
Similar Articles
Sperm Donation | What You Need to Know
Everything About Thrombophilia and Its Connection to Infertility