A semen analysis report is not a pass/fail test. The World Health Organization (WHO) publishes lower reference limits based on men who conceived within 12 months, and labs compare your sample against those values. Your report will list several parameters: volume, concentration, total count, motility, morphology, and others. Each one tells a different part of the story. The goal is not to label you fertile or infertile from a single sample. The goal is to give you and a doctor a map of what is happening with sperm production and delivery.
Start with the reference numbers. These values come from the WHO 2010 laboratory manual, fifth edition. They are lower fifth centile values, meaning 95 percent of men who conceived within a year had values above these cutoffs. They are not minimums for conception. A man just below the cutoff and a man just above it have similar biology.
- Volume: 1.5 mL
- Sperm concentration: 15 million per mL
- Total sperm count: 39 million per ejaculate
- Progressive motility: 32%
- Total motility: 40%
- Normal morphology: 4%
- Vitality: 58%
- pH: 7.2 or higher
- White blood cells: under 1 million per mL
Before you read each value, check two details. First, confirm the lab used WHO criteria. Some labs use older or newer cutoffs. Second, confirm the sample was collected after two to seven days of abstinence. Shorter gaps lower count and volume. Longer gaps can reduce motility and increase DNA fragmentation. Collection errors change the numbers more than many men realize, so the sections below cover what matters most.
Volume and total count
Volume measures how much fluid you ejaculate. The WHO lower reference limit is 1.5 mL, about a third of a teaspoon. Low volume is common with incomplete collection, especially when the first part of the ejaculate is lost. That first portion carries the highest sperm concentration. Low volume can also result from retrograde ejaculation, obstruction, or low androgen levels, but a single low volume often reflects collection problems rather than a biological issue. High volume can dilute the sample, which is why total count matters.
Sperm concentration is the number of sperm in one milliliter. The lower reference limit is 15 million per mL. Total sperm count is concentration multiplied by volume. The lower reference limit is 39 million per ejaculate. If your volume is 3 mL and your concentration is 12 million per mL, your total count is 36 million. That total is below the cutoff even though the concentration is not far from the reference. If your volume is 1 mL and your concentration is 14 million per mL, your total count is 14 million, which is far below. This is why a report that only shows concentration can mislead. Look at both numbers together.
Motility and morphology
Motility describes how well sperm move. Progressive motility means moving forward in a straight line or large curve. Non-progressive motility means moving but not covering distance. Total motility adds both together. The WHO 2010 lower reference limits are 32 percent progressive motility and 40 percent total motility. Sperm that do not move forward well can still be alive but have a tail problem. That is where vitality testing helps.
A derived number some doctors use is total motile sperm count. Multiply total count by total motility percentage. Example: 40 million total and 40 percent total motility gives 16 million total motile sperm.
Morphology looks at the shape of the sperm under strict criteria, often called Kruger morphology. The lower reference limit is 4 percent normal forms. That number surprises most men. In a fertile sample, the large majority of sperm are often shaped oddly. The threshold is low because normal shape is strict. Isolated low morphology with normal count and motility often does not change the overall assessment much, although some labs and doctors weigh it differently.
Vitality, pH, white blood cells, and DNA fragmentation
Vitality is the percentage of sperm that are alive. The WHO lower reference limit is 58 percent. If many sperm are immotile but alive, the cause may be a structural tail problem or lab handling delay. If many sperm are dead, the cause may be infection, oxidative stress, or sample age. This distinction helps a doctor decide what to test next.
pH should be 7.2 or higher. Low pH with low volume and no sperm can point to ejaculatory duct obstruction or congenital absence of the vas deferens. White blood cells should be under 1 million per mL. Higher levels can indicate infection or inflammation, but not all labs confirm white cells with special stains. Ask whether round cells were counted as white blood cells or immature germ cells.
Some reports include DNA fragmentation, but many do not. Higher fragmentation has been linked to longer time to pregnancy and recurrent miscarriage in some studies, but thresholds vary and the test is not routine. If your report includes a DNA fragmentation index, ask what the lab considers elevated and how that changes the next step.
Why one abnormal value is not a diagnosis
Reference ranges are statistical cutoffs, not biological cliffs. The WHO values come from men whose partners conceived within a year. The fifth centile means 5 percent of those fertile men had values below the cutoff. So a result below the lower reference limit does not mean zero fertility, and a result above it does not guarantee fertility. Fertility is a couple-level outcome. Partner age, ovulation, tubal status, and timing matter as much as your numbers.
Population-level data show sperm counts have declined over decades in many regions (Levine et al., Human Reproduction Update, 2023). That trend does not predict your individual result, and it does not change how to read this report.
A single abnormal result is common and often not reproducible. Sperm parameters vary week to week in the same man. Illness, heat exposure, stress, sleep, time since last ejaculation, and lab conditions all move the numbers. One low value usually prompts a repeat test rather than a panic response. A repeat is often done about two to three months later because sperm production takes roughly 74 days.
What can change your numbers between tests
Collection method affects results more than many men realize. The lab usually asks for two to seven days of abstinence. Too short lowers count and volume. Too long can increase DNA fragmentation and lower motility. If you collect at home, keep the sample close to body temperature and get it to the lab within 30 to 60 minutes. Cold kills motility fast. Do not use saliva, regular lubricant, or soap. Many lubricants are toxic to sperm. Use only the collection kit from the lab or a non-toxic option the lab approves.
If the first part of the ejaculate spills, volume and count will be artificially low. That first portion contains the highest concentration of sperm. Tell the lab if anything went wrong during collection. A note in the chart can prevent an unnecessary workup.
Heat is one of the best-studied factors. Sauna-level heat temporarily lowers sperm count and can worsen morphology. The effect is reversible once heat exposure stops because sperm production needs the testicles a few degrees cooler than core body temperature (Garolla et al., Human Reproduction, 2013). Recovery after stopping wet heat has also been documented (Shefi et al., Fertility and Sterility, 2007). A high fever can have the same temporary effect for up to a few months because sperm produced during the illness are affected downstream.
One study found tighter underwear raised scrotal temperature (Jung et al., Human Reproduction, 2005). A separate study found that sitting raised it too (Mieusset et al., Journal of Andrology, 2007). Men in a fertility-center cohort who reported looser, boxer-style underwear had higher sperm concentration and total count (Minguez-Alarcon et al., Human Reproduction, 2018). These are associations, not proof that switching underwear will change your result. But they explain why scrotal temperature gets attention in a fertility context.
Questions to ask when you review the report
Write down these questions before your appointment.
- Which WHO edition did the lab use?
- Was the sample collected and processed correctly?
- Should this result be repeated before any conclusions are drawn?
- Which values are outside the reference range, and which are borderline?
- What additional tests would help clarify the picture?
If the report uses terms like oligozoospermia, asthenozoospermia, teratozoospermia, or azoospermia, ask what they mean for your specific numbers. Oligozoospermia means low sperm count. Asthenozoospermia means low motility. Teratozoospermia means abnormal morphology. Azoospermia means no sperm were seen in the ejaculate. These terms describe findings, not causes. The cause requires more evaluation.
What comes next after an abnormal result
A repeat semen analysis in two to three months is the usual first step. If the repeat is also abnormal, a reproductive urologist may order hormone tests, a scrotal ultrasound, genetic tests, and a physical exam. Hormone tests often include FSH, LH, and total testosterone. FSH is a signal from the brain to the testicles. High FSH with low count can suggest the testicles are not responding normally. A scrotal ultrasound can look for varicocele, which is a common finding associated with lower sperm parameters. A reproductive urologist may consider genetic tests when the count is very low or zero.
If the report shows azoospermia, ask whether the lab centrifuged the sample and re-examined the pellet. Some men with apparent azoospermia have rare sperm that can be found after spinning the sample. Distinguishing obstructive from non-obstructive causes is a specialist task. Obstructive means sperm are being made but blocked from coming out. Non-obstructive means production itself is impaired. Some men in both groups can still have biological children with sperm retrieval techniques, depending on the cause. That conversation belongs with a reproductive urologist.
Taking the report forward
You can do a few things right now. Keep a copy of every result so you can compare changes over time. Mark any value outside the reference range and write down your questions. If you use medications, supplements, or anabolic agents, do not stop them on your own. Tell your doctor everything you take. Track heat exposure, illness, sleep, alcohol, and stress in the months before a repeat test. Those notes give the doctor context.
A normal report is reassuring, but it does not rule out fertility issues on its own. Male factor is one piece. Unexplained infertility, tubal problems, and egg quality can all coexist with a normal semen analysis. Use the report as a starting point, not a verdict.
This content is for educational purposes only and is not medical advice. Oakman products are designed for physical comfort and cooling. They make no claims about fertility, sperm quality, or hormone levels. Consult a healthcare professional for personalized advice.