Male fertility is an important part of reproductive health, yet it is often overlooked when couples are planning a pregnancy. Many people assume that fertility concerns are primarily related to women, but male reproductive factors contribute to approximately half of infertility cases, either independently or alongside female factors.
One of the first investigations doctors may recommend when evaluating male fertility is a semen analysis test. It helps assess sperm count, motility, morphology, and other semen characteristics that may influence the chances of conception.
But when should a man actually get tested? Should every man planning a family undergo semen analysis? And what signs or medical conditions make testing important?
Let's explore when semen analysis may be recommended, what the test evaluates, and how men can prepare for it.
What is a Semen Analysis Test?
A semen analysis is a laboratory investigation that examines a semen sample to evaluate sperm health and certain characteristics of seminal fluid.
It is commonly used as an initial investigation during male fertility assessment.
The test evaluates several parameters, including:
- Sperm concentration: Number of sperm present per millilitre of semen.
- Total sperm count: Total number of sperm in the entire ejaculate.
- Sperm motility: Ability of sperm to move.
- Sperm morphology: Shape and structure of sperm.
- Semen volume: Amount of semen produced during ejaculation.
- Sperm vitality: Percentage of live sperm, when assessed.
These findings help healthcare professionals identify abnormalities that may be associated with fertility difficulties.
However, semen analysis alone cannot confirm whether a man is fertile or infertile. Results need to be interpreted alongside medical history, physical examination, and the reproductive health of both partners.
When Should a Man Get a Semen Analysis?
There is no single age or fixed timeline at which every man must undergo semen analysis. Testing is generally recommended based on fertility goals, symptoms, medical history, and individual risk factors.
Here are some situations when a man may benefit from discussing semen analysis with a healthcare professional.
1. When a couple is unable to Conceive
One of the most common reasons for semen analysis is difficulty achieving pregnancy.
General recommendations suggest that couples consider a fertility evaluation:
- After 12 months: When the female partner is under 35 and the couple has been having regular unprotected intercourse without conception.
- After 6 months: When the female partner is 35 or older.
- Earlier evaluation: When either partner has known reproductive health problems or significant fertility risk factors.
Male and female partners should generally be evaluated together rather than assuming that the problem lies with one person.
2. When there is a History of Testicular Problems
The testes play an essential role in sperm production. Certain medical conditions or injuries affecting the testes may influence sperm quality.
A doctor may recommend semen analysis if a man has a history of:
- Undescended testes.
- Testicular injury or trauma.
- Testicular surgery.
- Varicocele (enlarged veins in the scrotum).
- Previous testicular infections.
- Testicular cancer or related treatment.
Testing may help assess sperm parameters and determine whether further investigation is needed.
3. When there are Hormonal Problems
Hormones such as testosterone, follicle-stimulating hormone (FSH), and luteinising hormone (LH) are involved in regulating male reproductive function.
Hormonal imbalances may affect sperm production and reproductive health.
A healthcare professional may recommend semen analysis alongside selected hormone tests if there are concerns such as:
- Low testosterone levels.
- Reduced sexual desire.
- Erectile difficulties.
- Reduced testicular size.
- Other signs of hormonal dysfunction.
Important: Testosterone treatment prescribed from outside the body can suppress natural sperm production. Men planning a pregnancy should discuss fertility implications with their doctor before starting or changing testosterone treatment.
4. Before Certain Fertility Treatments
Semen analysis is commonly included in fertility evaluation before treatments such as:
- Intrauterine insemination (IUI).
- In vitro fertilisation (IVF).
- Intracytoplasmic sperm injection (ICSI).
The results help fertility specialists understand sperm characteristics and consider appropriate treatment options.
The exact investigations required depend on the couple's medical history and treatment plan.
5. After Certain Medical Treatments
Some treatments may affect sperm production or reproductive function.
Examples include:
- Chemotherapy.
- Radiation therapy involving reproductive organs.
- Certain medications.
- Hormonal treatments.
- Some surgeries involving the reproductive system.
Men who are planning cancer treatment may wish to discuss fertility preservation, including sperm freezing, with their healthcare team before treatment begins.
A doctor may also recommend semen analysis after treatment to assess reproductive parameters when appropriate.
6. When there is a History of Recurrent Pregnancy Loss
Repeated pregnancy loss can involve several possible factors, including genetic, hormonal, anatomical, and other reproductive health concerns.
In selected cases, a fertility specialist may consider evaluating male reproductive health, including semen parameters or sperm DNA fragmentation.
Sperm DNA fragmentation testing is not routinely recommended for every man or every case of pregnancy loss. The decision should be based on individual clinical circumstances.
Are There Symptoms That Indicate a Man Needs a Semen Analysis?
Many men with abnormal sperm parameters do not experience noticeable symptoms.
However, certain symptoms or medical concerns may indicate the need for a reproductive health evaluation.
These include:
- Pain, swelling, or a lump in the testicular area.
- A history of testicular injury.
- Reduced sexual desire.
- Erectile or ejaculation difficulties.
- A history of reproductive tract infections.
- Known hormonal abnormalities.
- Difficulty conceiving with a partner.
These symptoms do not automatically indicate infertility. A doctor can determine whether semen analysis or other investigations are appropriate.
Seek prompt medical attention for sudden or severe testicular pain or swelling.
What Does a Semen Analysis Report Check?
A semen analysis report contains several measurements that provide information about sperm and semen characteristics.
| Parameter | What it evaluates |
| Semen volume | Amount of semen in the sample |
| Sperm concentration | Number of sperm per millilitre |
| Total sperm count | Total sperm in the ejaculate |
| Progressive motility | Percentage of sperm moving forward |
| Total motility | Percentage of sperm showing movement |
| Morphology | Percentage of sperm with normal shape |
| Vitality | Percentage of live sperm, when assessed |
| pH | Acidity or alkalinity of semen |
What Are the WHO Reference Values for Semen Analysis?
The World Health Organization's sixth edition Laboratory Manual for the Examination and Processing of Human Semen (2021) provides lower fifth-centile reference values.
| Parameter | WHO 2021 lower reference value |
| Semen volume | 1.4 mL |
| Sperm concentration | 16 million/mL |
| Total sperm number | 39 million per ejaculate |
| Total sperm motility | 42% |
| Progressive motility | 30% |
| Sperm vitality | 54% |
| Normal sperm morphology | 4% |
These values are reference limits based on a population of men whose partners conceived within a specified period. They are not strict boundaries between fertile and infertile men.
A result below a reference value does not automatically mean natural conception is impossible. Similarly, a result within the reference range does not guarantee pregnancy.
Your doctor should interpret the complete report in the context of both partners' reproductive health.
How to Prepare for a Semen Analysis Test
Following the correct preparation instructions can help ensure that the semen sample is suitable for laboratory examination.
1. Follow the Recommended Abstinence Period
Most laboratories recommend avoiding ejaculation for 2–7 days before sample collection.
This includes sexual intercourse and masturbation.
Follow the laboratory's specific instructions because abstinence duration can influence semen volume and sperm parameters.
2. Use the Sterile Collection Container
Collect the semen sample in the sterile container provided by the laboratory.
Avoid using ordinary household containers because they may contaminate the sample.
3. Collect the Complete Sample
It is important to collect the entire ejaculate.
If any portion of the sample is accidentally lost, inform the laboratory because this may affect the interpretation of results.
4. Avoid Ordinary Lubricants
Some lubricants and ordinary condoms may interfere with sperm movement or affect sample quality.
Follow the laboratory's instructions regarding acceptable collection methods.
5. Follow Sample Transportation Instructions
If the sample is collected outside the laboratory, follow the instructions regarding transportation time and temperature.
Semen samples generally need to reach the laboratory promptly, often within one hour of collection.
6. Share Your Medical History
Inform your doctor about recent fever, illness, medications, hormonal treatments, previous surgeries, or other medical conditions that may influence sperm parameters.
What do Abnormal Semen Analysis Results Mean?
An abnormal semen analysis does not automatically mean that a man cannot father a child.
Some common terms used in semen analysis reports include:
| Medical term | Meaning |
| Oligozoospermia | Lower-than-expected sperm concentration |
| Asthenozoospermia | Reduced sperm motility |
| Teratozoospermia | Higher proportion of abnormally shaped sperm |
| Azoospermia | No sperm detected in the ejaculate |
| Necrozoospermia | High proportion of dead sperm |
| Hypospermia | Lower-than-expected semen volume |
Depending on the findings, a doctor may recommend:
- Repeating the semen analysis.
- Hormonal investigations.
- Physical examination.
- Genetic testing in selected cases.
- Ultrasound or other imaging when indicated.
- Evaluation by a fertility specialist or urologist.
Why Might a Repeat Test Be Necessary?
Semen parameters can vary between samples.
Recent fever, illness, abstinence duration, incomplete sample collection, and other factors may influence the results.
If an abnormality is detected, a doctor may recommend a repeat semen analysis to confirm the findings. The timing depends on the initial result and clinical circumstances.
Semen Analysis vs Sperm DNA Fragmentation Test
Both tests provide information about male reproductive health, but they assess different aspects of sperm.
| Feature | Semen Analysis | Sperm DNA Fragmentation Test |
| Main purpose | Evaluates semen and sperm characteristics | Evaluates damage to sperm DNA |
| Sperm count | Measured | Not the main measurement |
| Motility | Measured | Not the main measurement |
| Morphology | Measured | Not the main measurement |
| DNA integrity | Not directly measured | Specifically assessed |
| Clinical use | Common initial fertility investigation | Considered in selected situations |
Sperm DNA fragmentation refers to damage or breaks in the genetic material carried by sperm.
A fertility specialist may consider this investigation in selected situations, including certain cases of unexplained infertility, recurrent pregnancy loss, or unsuccessful assisted reproductive treatment.
It is not a routine first-line test for every man undergoing fertility evaluation.
Can Lifestyle Changes Support Male Fertility?
Lifestyle habits can influence overall health and may affect sperm parameters.
Although lifestyle improvements cannot guarantee conception, the following steps may help reduce certain risk factors:
- Eat a balanced diet: Include fruits, vegetables, whole grains, nuts, and appropriate protein sources.
- Maintain a healthy weight: Excess body weight may be associated with hormonal and reproductive changes.
- Exercise regularly: Physical activity supports metabolic and cardiovascular health.
- Avoid smoking and tobacco: Smoking is associated with poorer sperm parameters.
- Limit excessive alcohol: Heavy alcohol consumption may affect reproductive function.
- Get adequate sleep: Consistent sleep supports overall health.
- Avoid anabolic steroids: These can suppress natural sperm production.
- Manage existing medical conditions: Seek appropriate care for diabetes, hormonal disorders, and reproductive tract infections.
Speak with a healthcare professional before taking fertility supplements or starting any treatment.
Conclusion
Semen analysis is an important investigation for understanding male reproductive health and identifying sperm-related abnormalities that may contribute to difficulty conceiving.
Men should consider discussing the test with a healthcare professional when a couple experiences difficulty achieving pregnancy, when there is a history of reproductive health problems, or when medical treatments and conditions may affect sperm production.
Understanding sperm count, motility, morphology, and other semen parameters can help guide further evaluation and appropriate medical decisions.
Male fertility is a shared part of reproductive health. Open communication, timely evaluation of both partners, and professional guidance can help couples take informed steps towards their family-planning goals.
Medical Disclaimer
Disclaimer: This article is intended for general educational and awareness purposes only. It is not a substitute for medical diagnosis, treatment or professional medical advice. Health screening recommendations vary according to age, sex, symptoms, medical history, medications, family history and individual risk factors. Please consult a qualified healthcare professional before deciding which tests or screenings are appropriate. Do not start, stop or change medication based solely on information in this article.
