What Is a Semen Analysis?

A semen analysis is a laboratory examination of semen and sperm. It is commonly used to evaluate male fertility and identify factors that may make natural conception more difficult.

The test may assess:

• Semen volume
• Sperm concentration
• Total sperm count
• Progressive motility
• Total motility
• Sperm morphology
• Semen pH
• Liquefaction
• Viscosity
• Vitality
• White blood cells
• Sperm agglutination

The WHO laboratory manual provides standardized methods for semen examination and quality control. WHO Semen Analysis Manual

Who Should Consider Semen Analysis?

Testing may be appropriate for men who:

• Have been trying to conceive without success
• Have a partner undergoing fertility evaluation
• Have a history of undescended testicles
• Had testicular injury, torsion, or infection
• Have a varicocele
• Received chemotherapy or radiation
• Had pelvic, prostate, or testicular surgery
• Use or previously used testosterone or anabolic steroids
• Have ejaculation difficulties
• Have hormonal symptoms
• Want to freeze sperm
• Underwent vasectomy or vasectomy reversal
• Want a general fertility assessment

Evaluation may begin earlier when either partner has a known reproductive condition or when the female partner’s age makes time especially important.

What Does Semen Analysis Measure?

Semen Volume

Semen volume is the total amount of fluid produced during ejaculation. A low volume may be associated with:

• Incomplete specimen collection
• Short abstinence period
• Retrograde ejaculation
• Blockage of reproductive ducts
• Prostate or seminal vesicle conditions
• Hormonal concerns

Volume alone does not determine fertility.

Sperm Concentration

Sperm concentration measures the number of sperm in each milliliter of semen.

A reduced concentration may be called oligozoospermia. If no sperm are seen, the finding is called azoospermia and requires confirmation and further evaluation.

Total Sperm Count

Total sperm count considers both the sperm concentration and total semen volume.

It may provide a broader picture than concentration alone.

Sperm Motility

Motility measures the percentage of sperm that move and how effectively they move forward.

Results may include:

• Progressive motility
• Non-progressive motility
• Immotile sperm
• Total motility

Poor movement may reduce the likelihood of sperm reaching and fertilizing an egg.

Sperm Morphology

Morphology evaluates sperm shape, including the head, midpiece, and tail.

Morphology is only one component of fertility. An abnormal morphology result does not automatically mean natural pregnancy is impossible.

Sperm Vitality

Vitality testing determines how many sperm are alive. It may be especially useful when a large percentage of sperm appear immotile.

Liquefaction and Viscosity

Semen normally changes from a gel-like consistency to a more liquid state after ejaculation. Delayed liquefaction or increased viscosity may interfere with laboratory assessment or sperm movement.

White Blood Cells

Elevated white blood cells may suggest inflammation or infection, but additional testing may be required to determine the cause.

How to Prepare for Semen Analysis

Patients are commonly instructed to avoid ejaculation for a defined period before the test. MedlinePlus notes that instructions may involve approximately two to seven days of abstinence, but patients should follow the testing laboratory’s exact requirements. MedlinePlus: Semen Analysis

Preparation may include:

• Avoid ejaculation for the instructed period
• Avoid excessive alcohol
• Report recent fever or illness
• Report current medication and supplements
• Disclose testosterone or steroid use
• Avoid unapproved lubricants during collection
• Follow the clinic’s hygiene instructions
• Confirm whether collection must occur at the clinic

Using a consistent abstinence period is helpful when comparing repeat tests.

How Is the Semen Sample Collected?

The sample is usually collected by masturbation into a sterile laboratory container in a private room.

Patients should generally:

1. Wash and dry their hands.
2. Follow the clinic’s genital-cleaning instructions.
3. Collect the entire ejaculate directly into the container.
4. Avoid touching the inside of the container.
5. Close the container immediately.
6. Report any portion of the sample that was lost.
7. Record the collection time.

The first portion of the ejaculate may contain a high concentration of sperm, so incomplete collection can significantly affect the result.

Can the Sample Be Collected at Home?

Some clinics may permit home collection when:

• The correct sterile container is used
• The sample can reach the laboratory quickly
• It is maintained near body temperature
• The full collection time is documented
• Transportation instructions are followed precisely

Clinics may prefer on-site collection to reduce delays and temperature changes. International patients should confirm the policy before their appointment.

Can a Regular Condom Be Used?

Standard condoms should generally not be used because lubricants or spermicidal substances may affect sperm.

When masturbation is not possible, the clinic may provide a special collection condom designed for fertility testing. MedlinePlus: Semen Analysis

Factors That Can Affect Semen Analysis Results

Results may be influenced by:

• Incomplete sample collection
• Abstinence period
• Fever during the previous several months
• Acute illness
• Stress
• Sleep deprivation
• Smoking
• Alcohol
• Recreational drugs
• Heat exposure
• Testosterone or anabolic steroids
• Certain medications
• Sample temperature
• Delayed laboratory delivery
• Recent genital or urinary infection

Because sperm development takes several weeks, a recent illness may affect results even after the patient feels better.

Why Is Repeat Semen Analysis Recommended?

Semen quality naturally varies between samples. A single abnormal result does not always establish a permanent fertility problem.

Repeat testing may be recommended when:

• Sperm count is low
• Motility or morphology is abnormal
• No sperm are detected
• The sample was incomplete
• The abstinence period was unsuitable
• Recent fever or illness occurred
• Collection or transportation was delayed
• The result does not match the clinical history

The doctor will recommend appropriate timing for the repeat sample.

Understanding Semen Analysis Results

Results should be interpreted using:

• The laboratory’s methods and reference values
• The entire semen profile
• Repeat testing
• Medical and reproductive history
• The female partner’s fertility factors
• Duration of attempted conception

A result outside a reference range does not prove infertility. Likewise, a result within the reference range does not guarantee pregnancy.

Fertility depends on both partners and multiple biological factors.

Low Sperm Count

Low sperm count may be associated with:

• Varicocele
• Hormonal disorders
• Testicular injury
• Genetic conditions
• Undescended testicles
• Infection
• Heat exposure
• Obesity
• Smoking
• Medication
• Chemotherapy or radiation
• Testosterone or steroid use

Further evaluation may include hormone testing, physical examination, ultrasound, or genetic tests.

Low Sperm Motility

Reduced sperm movement may be associated with:

• Varicocele
• Infection or inflammation
• Oxidative stress
• Heat exposure
• Delayed specimen analysis
• Genetic factors
• Testicular dysfunction
• Lifestyle factors

Treatment depends on the suspected cause and the severity of the result.

Abnormal Sperm Morphology

Morphology results should not be interpreted alone. A patient with a low percentage of normally shaped sperm may still achieve natural conception, particularly when count and motility are favorable.

The doctor will consider the complete analysis and the couple’s fertility history before recommending treatment.

What Does Azoospermia Mean?

Azoospermia means that no sperm are detected in the semen sample.

Possible causes include:

• Blockage of the reproductive tract
• Severely reduced sperm production
• Hormonal suppression
• Genetic conditions
• Previous surgery or infection
• Testosterone or anabolic steroid use
• Ejaculatory disorders

Azoospermia should be confirmed with repeat and specialized laboratory assessment. It does not automatically mean that biological fatherhood is impossible.

Additional Male Fertility Tests

Depending on the semen analysis, the doctor may recommend:

• Total and free testosterone
• LH and FSH
• Prolactin
• Thyroid testing
• Scrotal ultrasound
• Genetic or chromosome testing
• Post-ejaculation urine testing
• Sperm DNA fragmentation testing
• Testicular biopsy
• STI or infection testing

Not every patient requires every examination.

Semen Analysis and Testosterone Use

External testosterone and anabolic steroids can suppress the hormones required for sperm production. This may lead to:

• Low sperm count
• Azoospermia
• Testicular shrinkage
• Reduced natural fertility

Men planning children should discuss testosterone use with a fertility specialist. They should not stop prescribed treatment without medical guidance.

Semen Analysis After Vasectomy

After vasectomy, semen analysis determines whether sperm remain in the ejaculate.

Patients must continue alternative contraception until the treating doctor confirms that the result meets the required post-vasectomy criteria.

The number and timing of tests depend on the procedure and clinic protocol.

Semen Analysis After Vasectomy Reversal

Testing after vasectomy reversal assesses whether sperm have returned to the semen and evaluates their number and movement.

Repeated tests may be needed because sperm recovery can change during the months following surgery.

Semen Analysis Before Sperm Freezing

Sperm freezing may be considered before:

• Cancer treatment
• Testicular or pelvic surgery
• Gender-affirming treatment
• Vasectomy
• Long-term travel
• Fertility treatment
• Occupational exposure
• Age-related fertility planning

The clinic may recommend infectious disease screening and multiple collections.

Treatment After an Abnormal Result

Treatment depends on the underlying cause and may include:

• Lifestyle modification
• Treatment of infection
• Hormone therapy for selected disorders
• Varicocele repair
• Medication adjustment
• Stopping non-prescribed steroids
• Treatment of ejaculation problems
• Sperm retrieval
• Intrauterine insemination
• IVF
• ICSI

Supplements should be discussed with a doctor because evidence, quality, dosing, and interactions vary.

Semen Analysis for International Patients

Busan offers semen analysis through urology, reproductive medicine, and fertility clinics. International patients should confirm whether the clinic has a private collection room and English-language support.

Patients should bring:

• Previous semen analysis results
• A list of medications and supplements
• Details of testosterone or steroid use
• Hormone test results
• Scrotal ultrasound records
• Fertility treatment history
• Cancer treatment records
• Information about the abstinence period

Patients with limited time in Korea should ask whether repeat testing can be completed before departure.

How Long Do Results Take?

Sample collection may be completed during one visit. Result timing depends on:

• Laboratory workflow
• Routine or specialized testing
• Whether vitality testing is required
• Additional infection testing
• Need for repeat examination
• Clinic consultation scheduling

The clinic should explain whether results will be delivered electronically, in person, or through a follow-up consultation.

Semen Analysis Cost in Busan

The total cost may depend on:

• Medical consultation
• Standard semen analysis
• Repeat testing
• Sperm vitality testing
• Infection screening
• Hormone testing
• Sperm DNA fragmentation testing
• Scrotal ultrasound
• Genetic testing
• Sperm freezing and storage
• Medical certificates

Patients should request an individualized estimate based on the required fertility evaluation.

When Should You See a Fertility Specialist?

Consider specialist evaluation when:

• Semen analysis is repeatedly abnormal
• No sperm are detected
• Testicular pain, swelling, or a lump is present
• You have a history of undescended testicles
• Pregnancy has not occurred after regular unprotected intercourse
• The female partner is 35 or older
• You previously received chemotherapy or radiation
• You use testosterone or anabolic steroids
• Ejaculation is difficult or absent
• A genetic or hormonal condition is suspected

Sudden testicular pain requires emergency assessment and should not wait for a fertility appointment.

Frequently Asked Questions

How long should I abstain before semen analysis?

Clinics commonly request a specific period without ejaculation, often between two and seven days. Follow the laboratory’s exact instructions.

Does one abnormal result mean I am infertile?

No. Semen results naturally vary, and repeat testing may be required. Fertility also depends on factors involving both partners.

Can I collect the sample at home?

Possibly. The clinic must approve home collection and provide instructions regarding the container, temperature, delivery time, and transportation.

Can testosterone therapy reduce sperm count?

Yes. External testosterone can significantly suppress sperm production and may cause azoospermia.

Can azoospermia be treated?

Treatment depends on whether the cause is obstruction, hormonal suppression, impaired sperm production, or another condition. Sperm retrieval may be possible in selected cases.

Can international patients receive semen analysis in Busan?

Yes. International patients can receive private semen analysis, hormone testing, ultrasound, fertility consultation, and treatment planning in Busan.