PCR 28 Multiplex DNA Test | Bangkok, Pattaya, Phuket, Chiang Mai & Koh Samui

PCR Multiplex DNA Test for 28 Infections - Most Advanced DNA Test in Bangkok, Pattaya, Phuket, Chiang Mai & Koh Samui (Thailand)

Written by Dr Deyn Natthakhet Yaemim (Founding Director) on 10 February 2023, Last updated 16 October 2026

Proactive, routine screening for sexually transmitted infections (STIs) forms the bedrock of modern preventive healthcare. A substantial proportion of STIs present completely asymptomatically—meaning they persist and propagate without causing noticeable clinical symptoms. Consequently, molecular diagnostic evaluation remains the sole definitive standard for securing an accurate diagnosis and initiating timely, target-driven medical care.

At PULSE Clinic, our clinical protocols integrate state-of-the-art diagnostic technology via the PCR 28 Multiplex Panel. This high-precision molecular screen simultaneously detects 28 distinct bacterial, viral, fungal, and protozoal pathogens from a single clinical specimen.

Authored by our medical directors, this guide provides an evidence-based overview of the biophysical mechanics of Polymerase Chain Reaction (PCR) testing, the full spectrum of detectable pathogens, appropriate anatomical sampling techniques, transparent fee structures, and clinically validated diagnostic window periods. Our commitment is to deliver transparent, medically verified health intelligence within a strictly confidential, non-judgemental clinical setting.

Understanding PCR Molecular Testing for STIs

PCR—or Polymerase Chain Reaction—is a highly sensitive form of Nucleic Acid Amplification Testing (NAAT) designed to identify trace sequences of specific pathogen DNA or RNA within a patient specimen. Widely recognised as the gold standard in diagnostic microbiology, PCR testing is vital for identifying fastidious or silent organisms such as Chlamydia trachomatis and Neisseria gonorrhoeae. Because NAAT assays exponentially amplify targeted genetic material, they demonstrate exceptional analytical sensitivity, successfully detecting pathogens even when present in extremely minute microbial loads.

Comprehensive STD Screening Package Price at PULSE Clinic

• Prices are in Thai baht
• Price per one location of testing
• Online results will be available at PULSE Online Portal (POP) and the E-Doc mobile application
• For semen/sperm specimens, please avoid all sexual activity that results in ejaculating semen/sperm for 2 - 7 days before providing the sample.
• For PCR28 same-day results, the sample must be taken at the clinic before noon (12.30 p.m.).

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

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

Why get tested if you have no symptoms?

Many people with STIs feel completely well. Infections affecting the throat, rectum, or genital tract may go unnoticed, depending on the organism and the site of infection.

Testing when you have no symptoms can help you:

• Identify infections and access treatment when needed.
• Reduce the risk of complications associated with untreated infections.
• Inform partners when appropriate so they can seek testing and treatment.
• Make informed decisions about sexual health and prevention.
• Feel more confident about your next steps after a possible exposure.

The appropriate testing schedule depends on your circumstances. A healthcare professional can help you choose suitable tests and timing.

Which 28 infections does the PCR panel detect?

Comprehensive STD Detection with Our Advanced PCR Multiplex Test for 28 Infections. Our STD PCR Multiplex uses cutting-edge technology to detect multiple infections in a single test. It screens for 28 different infections in various body locations, including

• Chlamydia Trachomatis (serovars A-K), which causes chlamydia
• Chlamydia Trachomatis (serovars L1-L3), which causes LGV or Lymphogranuloma venereum
• Neisseria gonorrhoeae, which causes Gonorrhoea
• Trichomonas vaginalis, which causes Trichomoniasis
• Mycoplasma hominis
• Mycoplasma genitalium
• Ureaplasma urealyticum
• Ureaplasma parvum
• Herpes Simplex Virus (HSV) type I
• Herpes Simplex Virus (HSV) type II
• Treponema pallidum, which causes syphilis
• Haemophilus ducreyi, which causes chancroid
• Cytomegalovirus (CMV) 
• Varicella-Zoster Virus (VZV)
• Candida albicans
• Candida dubliniensis
• Candida glabrata 
• Candida krusei 
• Candida lusitaniae
• Candida parapsilosis 
• Candida tropicalis 
• Atopobium vaginae
• Bacterial vaginosis (associated bacteria 2)
• Bacteroides fragilis
• Gardnerella vaginalis
• Lactobacillus
• Megasphaera Type 1
• Mobiluncus

We can detect these infections in the following areas:

• Throat and oral cavity
• Urethra (male & female)
• Anorectal area
• Vagina and cervix
• Sperm
• Skin lesions

What Test Is Right for You?

• For urethra and urinary tract infections, opt for the Urine PCR for 28 infections.
• To test for infections from oral sex, select the Throat Swab PCR for 28 infections.
• If you engage in anal sex without a condom, choose the Anal Swab PCR for 28 infections.
• For women engaging in vaginal sex, choose the Vaginal Swab PCR for 28 infections.

Important information about interpreting results

Some organisms that may be detected by multiplex panels, including Ureaplasma species, Mycoplasma hominis, certain Candida species and Gardnerella vaginalis, can be present without causing symptoms or requiring treatment.

A positive result does not automatically mean you need medication. Your doctor will interpret the result alongside your symptoms, medical history, and the relevant clinical guidance.

Please note: This list reflects the PCR 28 panel described in this article. The exact number of reportable targets and organisms included in each panel should be confirmed against the current laboratory specification.

The panel does not replace blood tests for HIV, hepatitis B, or hepatitis C. Syphilis may also require blood testing, even if a molecular test is available for a particular specimen. Please tell our team if you would like a broader STI screening assessment.

Which sample should I choose?

The right sample depends on the type of sexual contact you have had, your symptoms, and the infection being investigated. Testing the right anatomical site matters because a urine sample may not detect an infection confined to the throat or rectum.

Not every panel can be used with every sample type. Please confirm that the selected PCR panel is validated for your intended specimen.

A throat swab may cause brief gagging, while a rectal swab may cause mild discomfort or pressure. Our trained staff can explain the collection process and help you feel comfortable.

How to give a urine sample

1. Register at the clinic and receive your sample container and instructions.
2. Follow the collection instructions provided by our staff.
3. If instructed, collect the first part of your urine stream rather than a midstream sample.
4. Secure the lid and place the container in the specimen bag.
5. Return the sample to our staff and confirm your contact details.

For the urine PCR test described here, please avoid urinating for at least one hour before your appointment, unless your clinician or laboratory provides different instructions. Fasting is not normally required for this test.

How long do PCR results take?

Turnaround times depend on the selected panel, sample type, laboratory processing, and the service you choose.

For the PCR 28 service described above, standard results are listed as available within seven days, with three-day, next-day, and same-day options subject to availability and additional fees.

For same-day results on the PCR 28 panel, the published instructions specify that the sample must be collected at the clinic before 12:30 p.m. Please confirm this cut-off with our team before your visit.

Results are sent to the email address you provide. You may also be able to access them through the PULSE Online Portal (POP) and the E-Doc mobile app, subject to the current service arrangements.

When should I get tested after exposure?

Every infection has a window period: the time between exposure and when a particular test can reliably detect the infection. Testing too early may produce a negative result even if an infection is present.

The appropriate timing depends on the organism, the type of test and the sample collected.

• Chlamydia and gonorrhoea: NAAT or PCR testing is commonly recommended around 14 days after exposure when screening for an asymptomatic infection. Your clinician may advise earlier assessment or repeat testing depending on your circumstances.
• Other organisms tested by PCR: Detection timing varies by organism and assay. Do not assume that one window period applies to every organism in a multiplex panel.
• HIV: The window period depends on the test used. A laboratory fourth-generation antigen/antibody test and an antibody-only test may detect infection at different times.
• Syphilis and hepatitis B and C: Blood-test timing varies by infection and test type. Follow your clinician's advice about the initial test and whether repeat testing is needed.

If you have symptoms, a known exposure or a partner who has been diagnosed with an STI, seek medical advice rather than waiting for a particular window period to pass. A clinician can help you decide whether to test now and when to repeat a test if necessary.

If a possible HIV exposure occurred within the past 72 hours, seek urgent medical assessment for post-exposure prophylaxis (PEP). PEP should be started as soon as possible when indicated.

How often should I be tested?

There is no single testing schedule that suits everyone. The right frequency depends on your sexual activity, number of partners, types of exposure, prevention methods and previous results.

General considerations include:

• Routine screening: Consider regular STI screening if you are sexually active, particularly when you have new partners or have not been tested recently.
• Every 3–6 months: More frequent screening may be appropriate for people with ongoing exposure risks, including some gay and bisexual men and people with multiple partners.
• After a possible exposure: Ask a healthcare professional when to test and whether repeat testing is necessary.
• When symptoms develop: Arrange an assessment promptly rather than waiting for your next routine screen.
• After a partner's diagnosis: Seek advice about the appropriate tests, treatment and timing.

Screening recommendations also differ by age, pregnancy status, anatomical site and local clinical guidance. People who may benefit from screening for specific infections should discuss a personalised schedule with their healthcare professional.

What happens if my result is positive?

A positive result does not mean that you have to manage everything alone. Many bacterial STIs are curable with appropriate treatment, while other infections can be managed with medical care.

Your doctor will explain what the result means, whether treatment is recommended and whether additional testing is needed. You may also receive advice about notifying partners, avoiding transmission and arranging follow-up testing.

Some organisms detected by multiplex panels can be present without causing disease. This is why the result needs to be interpreted in context rather than assuming that every positive finding requires medication.

Your results and medical information are handled confidentially in accordance with applicable privacy requirements.

Why choose PULSE Clinic?

• Experienced medical team: Our team aims to provide clear explanations and respectful care without judgement.
• Multiple testing options: Ask about the available PCR panels and which organisms each one covers.
• Flexible turnaround options: Faster results may be available for selected tests, subject to confirmation.
• Confidential care: Our team can explain how results are delivered and accessed.
• Convenient appointments: Walk-ins and online booking may be available, depending on the branch and service.

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

Frequently asked questions

Do I need an appointment for an STD test in Thailand?

Not at all! Walk-ins are always welcome at all PULSE Clinic locations across Thailand. However, if you prefer a quick, seamless visit with minimal waiting time, you can easily book online or message our team in advance to reserve your preferred time slot.

How should I prepare for my PCR test?

Fasting is not required, so you can eat and drink normally before coming in. For urine samples, please avoid urinating for at least 1 hour prior to your test. For semen samples, please refrain from ejaculation or any sexual activity for 2 to 7 days before providing your specimen. Swab samples don't require any special preparation, and our clinic staff will guide you through every step when you arrive.

How soon after exposure can I get tested?

The ideal timing depends on the specific infection you wish to screen for. Chlamydia and gonorrhoea PCR testing is commonly recommended around 14 days post-exposure for accurate asymptomatic screening. An HIV 4th generation test provides conclusive results around 45 days post-exposure, while blood tests for syphilis and viral hepatitis typically require up to 3 months for reliable detection. Please note that if you are currently experiencing symptoms or know you have been exposed, you should not wait out these window periods and should visit our doctors right away.

Does the PCR 28 test include HIV or Hepatitis?

No, it does not. HIV, Hepatitis B, and Hepatitis C require separate blood investigations. While the PCR 28 panel detects the syphilis bacterium (Treponema pallidum) from an open sore or swab, standard blood testing remains the most reliable method for syphilis screening. Our doctors can easily combine all necessary blood tests and PCR panels for you in a single visit.

Is a urine PCR test just as accurate as a swab?

Yes, for urogenital infections, a urine PCR test is exceptionally accurate when collected properly. However, urine cannot detect infections localised to other anatomical sites. Depending on the type of sexual contact you have had, our doctors may recommend a throat or rectal swab alongside urine collection to ensure complete, full-body protection.

Are my test results kept confidential?

Absolutely yes. Patient privacy is our highest priority. Your medical records and test results are strictly confidential, delivered safely to your designated email, and accessible anytime via the encrypted PULSE Online Portal (POP) or the E-Doc mobile app.

Book your STD test in Thailand

Taking care of your sexual health is a responsible and positive step for yourself and your partners. Whether you have symptoms, a new partner, a known exposure, or want to understand your sexual health status, our team can help you explore suitable testing options.

Contact PULSE Clinic to confirm the available PCR panels, sample types, prices, and turnaround times, or to arrange an appointment.

Our team is here to help you make informed decisions about your health in a supportive, confidential and non-judgemental environment.

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

Medical disclaimer: This article is for general information only and does not replace advice from a qualified healthcare professional. Testing and treatment decisions should be based on your individual circumstances and appropriate medical assessment.