Male Infertility and STDs: Causes, Risks, and PCR31 Panel Testing

Male Infertility and STDs: Causes, Risks, and PCR31 Panel Testing at PULSE Clinic

Struggling to conceive can be one of the most stressful experiences a couple faces, and male factors contribute to around half of infertility cases, either alone or together with female factors. While many people associate infertility with women's health, male fertility is just as important — and just as often overlooked. One potential and sometimes overlooked factor is an undiagnosed sexually transmitted infection (STI).

Some men may have an infection without obvious symptoms, which can increase the risk of complications that may affect reproductive health if left untreated. The good news is that many STIs can be detected through appropriate testing and managed effectively with timely treatment. At PULSE Clinic, our PCR31 panel screens for 31 infections from a single sample, providing a comprehensive option for people who want to check for infections that may otherwise go undetected.

This article explains how certain STIs can contribute to male fertility problems, what other factors are commonly involved, and how PCR testing can support sexual and reproductive health.

How STDs Can Affect Male Fertility

Not every STI affects fertility, but some infections can contribute to fertility problems, particularly when they remain undiagnosed and untreated.

Here is how this may happen:

• Inflammation and scarring: Bacterial infections such as chlamydia and gonorrhoea can cause inflammation of the reproductive tract, including epididymitis. In some cases, inflammation may result in scarring that can interfere with the tubes through which sperm travel.
• Changes in sperm quality: Some genital infections have been associated with changes in sperm parameters, including sperm motility, morphology, and count. However, the effect varies depending on the infection and the individual.
• Infections without obvious symptoms: Some STIs, particularly chlamydia, may cause few or no noticeable symptoms in men. Without testing, an infection can remain undiagnosed and untreated, increasing the risk of complications.

STDs Most Commonly Linked to Male Fertility Problems

It's important to remember that not everyone with these infections will experience fertility problems, and having an STI does not automatically mean you are infertile. The risk depends on factors such as the specific infection, whether complications develop, and how long the infection remains untreated.

Other Common Causes of Male Infertility

STIs are only one piece of the picture. If you and your partner are having trouble conceiving, it is worth considering the full range of possible causes, which may include:

• Varicocele — enlarged veins around the testicle that can affect the environment needed for normal sperm production
• Hormonal imbalances — including conditions that affect testosterone or other reproductive hormones
• Lifestyle factors — such as smoking, heavy alcohol use, anabolic steroid use, or chronic stress
• Heat exposure — frequent exposure to high temperatures, such as hot tubs or saunas, may affect sperm production
• Genetic conditions — including Klinefelter syndrome and other chromosomal or genetic abnormalities
• Certain medications or medical treatments — including some medicines and previous chemotherapy or radiation therapy

A thorough fertility evaluation can help identify or rule out potential contributing factors rather than relying on symptoms alone. Depending on the situation, this may include a semen analysis, hormone testing, physical examination, and STI screening.

Why Early STI Testing Matters for Fertility

Because some STIs cause mild or no symptoms in men, waiting for noticeable signs before getting tested can allow an infection to remain undiagnosed. Early detection can help reduce the risk of complications and allow appropriate treatment when needed.

Potential benefits of testing include:

• Earlier diagnosis and treatment — many bacterial STIs can be treated effectively with the appropriate antibiotics, although treatment depends on the specific infection.
• Reduced risk of complications — diagnosing and treating an infection may help reduce the risk of complications such as epididymitis and inflammation of the reproductive tract.
• Greater peace of mind — testing can provide reassurance, particularly for people who are planning a pregnancy.
• Protection of your partner's health — identifying and treating an STI can also reduce the risk of passing an infection to a sexual partner.

PCR31 Panel Testing at PULSE Clinic

PULSE Clinic offers PCR31, a multiplex DNA/PCR test that screens for 31 infections from a single sample. PCR (polymerase chain reaction) technology detects genetic material from specific pathogens and can help identify infections that may not cause noticeable symptoms.

Why patients may choose PCR31 at PULSE Clinic:

• One sample, comprehensive screening: PCR31 screens for a broad panel of infections from a single sample, which can be convenient for people seeking comprehensive STI testing.
• Molecular detection: PCR-based testing identifies genetic material from specific pathogens rather than relying solely on symptoms or the body's antibody response.
• Confidential testing: PULSE Clinic provides discreet, non-judgemental sexual health services, with results typically available within a few days.
• Useful for reproductive health planning: For people who are trying to conceive or planning a pregnancy, STI screening can be one part of a broader approach to sexual and reproductive health.

If you are unsure which testing option is appropriate for you, our clinicians can help you choose between available PCR panels, including 7-, 14-, 21-, 28-, or 31-infection options, based on your symptoms, risk factors, and medical history.

PCR31 Test – STD Screening Promotion at PULSE Clinic Thailand

• Prices are in Thai Baht
• Online results will be available at the PULSE Online Portal (POP) and the E-Doc mobile application
• For same-day result testing, the sample must be taken at the clinic before noon (12:30 PM)
• Same-day and next-day results are only available at the Bangkok, Pattaya, and Phuket branches

Who Should Consider PCR31 Testing?

You may want to consider comprehensive PCR STI testing if you:

• Are trying to conceive or planning to start a family in the near future
• Have had a new sexual partner or multiple sexual partners
• Have noticed unusual symptoms such as discharge, pain, or swelling
• Have never had an STI screening or it has been a long time since your last test
• Want a comprehensive sexual health check

If you are experiencing fertility difficulties, STI screening should generally be considered alongside other appropriate fertility assessments rather than used as the only test.

Sperm Analysis Price List

*Prices are in Thai Baht (THB)

Take Control of Your Fertility Today!

Contact us at info.bkk@pulse-clinic.com or chat on your preferred platform:

Frequently Asked Questions

Can STDs cause permanent infertility in men?

In some cases, untreated infections such as chlamydia or gonorrhoea can lead to complications that may interfere with sperm transport and potentially contribute to fertility problems. However, having an STI does not automatically mean that a person will become infertile. Early diagnosis and appropriate treatment can help reduce the risk of complications.

How do I know if an STD is affecting my fertility?

Some STIs do not cause noticeable symptoms in men, so symptoms alone cannot reliably determine whether an infection is present. If you are having difficulty conceiving, an STI test may be included as part of a broader fertility assessment, which may also include a semen analysis and other tests depending on your circumstances.

Is the PCR31 test painful or complicated?

Sample collection is generally quick and straightforward, although the required sample type depends on the infections being tested and the testing protocol. The PULSE Clinic team can explain the collection process and what to expect before testing.

Should both partners get tested if we're trying to conceive?

It is often appropriate for both partners to discuss STI screening with a healthcare professional when planning a pregnancy, particularly if there are risk factors or concerns about a possible infection. Testing both partners can help identify infections that may otherwise go unnoticed and ensure that any necessary treatment is addressed appropriately.

How often should sexually active men get tested?

There is no single testing schedule that is right for everyone. How often someone should have an STI screening depends on factors such as sexual activity, number of partners, condom use, previous STI history, and other individual risk factors. A healthcare professional can recommend an appropriate testing schedule based on your circumstances.

Take Charge of Your Reproductive Health

Male infertility can have many possible causes, and an undiagnosed STI is just one factor worth considering. Because some infections may cause few or no symptoms, appropriate testing can be an important part of looking after your sexual and reproductive health.

At PULSE Clinic, our medical team provides confidential, non-judgemental STI testing, including the comprehensive PCR31 panel, together with guidance on appropriate next steps if an infection is detected.

If you are planning for a family or simply want to better understand your sexual health, book an appointment with PULSE Clinic to discuss which testing options may be suitable for you.

Contact us at info.bkk@pulse-clinic.com or chat on your preferred platform:

This article is for general educational purposes and is not a substitute for personalised medical advice. Please consult a PULSE Clinic doctor for diagnosis, testing, and treatment recommendations specific to your situation.