The semen analysis is the most informative fertility test relative to its cost and inconvenience. It is non-invasive, cheap, produces results within days, and in roughly a third of couples it identifies the contributing factor. And it is still, routinely, the last test anyone arranges.
The pattern is familiar: months of investigation of the female partner — blood tests across several cycles, ultrasound, sometimes a tubal test — before anyone suggests the male partner produce a sample. There is no clinical justification for this ordering.
What is measured
Volume — how much semen. A very low volume can suggest a blockage or a problem with the seminal vesicles.
Concentration — sperm per millilitre. This is the number most people mean by "count", though total count across the sample also matters.
Motility — what proportion are moving, and how well. Progressive motility, meaning sperm swimming purposefully forward, is more informative than total movement.
Morphology — the proportion with normal shape. Strict criteria mean even fertile men have a low percentage of perfectly formed sperm, so a low morphology figure is far less alarming than it appears.
Vitality, white cells and pH — vitality distinguishes non-moving sperm that are alive from those that are not; raised white cells may indicate infection.
Preparing properly
A poorly collected sample gives a misleading result and leads to unnecessary worry or, worse, an unnecessary change of plan.
- Abstain for two to five days beforehand — not less, not much more. Both extremes distort results.
- Collect the complete sample. The first fraction contains the highest concentration, so a partial sample under-reports significantly.
- Deliver it to the laboratory promptly and keep it near body temperature in transit.
- Do not use ordinary lubricants or condoms, which can be toxic to sperm.
- Mention any recent fever or illness — see below.
One result is not a diagnosis. Sperm take around seventy-two days to develop. A fever, a viral illness, a course of antibiotics or a period of heavy stress two months ago can depress a result substantially. An abnormal result should almost always be repeated after a few weeks before conclusions are drawn.
What an abnormal result means
Usually far less than men fear. The common patterns each have a route forward:
- Mildly reduced count or motility — often manageable with IUI, lifestyle change, or treatment of an underlying cause such as a varicocele.
- Significantly reduced parameters — ICSI, in which a single sperm is injected directly into an egg, addresses this very effectively. Only one viable sperm is needed per egg.
- No sperm in the ejaculate (azoospermia) — this sounds final and frequently is not. It may be obstructive, where production is normal but the passage is blocked, or non-obstructive. In many cases sperm can be retrieved surgically from the testis or epididymis and used with ICSI.
When further tests are worth doing
DNA fragmentation assesses damage to the genetic material inside sperm, which a standard analysis does not detect. It is considered after recurrent miscarriage, repeated IVF failure, or unexplained infertility with a normal-looking analysis.
Hormone profile helps distinguish a production problem from an obstruction.
Scrotal ultrasound looks for a varicocele or structural abnormality.
Genetic testing is indicated where the count is very low or absent.
What genuinely improves sperm quality
- Stopping smoking and chewing tobacco — the clearest association in the evidence
- Reducing alcohol
- Losing weight where BMI is raised
- Avoiding prolonged heat — hot baths, saunas, a laptop resting on the lap
- Stopping anabolic steroids and reviewing testosterone supplements with a doctor, since these suppress sperm production, sometimes severely and sometimes lastingly
- Treating a significant varicocele where other factors have been excluded
- Allowing three months for any change to show, because that is the production cycle
A word about how this lands
Being told there is a male factor is difficult in a way that is not always acknowledged, and men are frequently given less explanation and less follow-up than their partners at this point. If that is happening to you, ask for the same level of detail. The information is not more complicated; it is simply offered less readily.
Most male factor infertility is either treatable or effectively bypassed. It is very rarely the end of the conversation.
Please note. This page is general information, not medical advice. What is appropriate for you depends on your history, your investigations and a specialist assessment. No fertility treatment can guarantee a pregnancy.
Reviewed by the clinical team at Sree Nandaka IVF Centre, Kompally. General information only — not a substitute for a consultation.
