Written by Dr.Deyn Natthakhet Yaemim, 19 March 2017
Medically Reviewed and updated by Dr.Deyn Natthakhet Yaemim, 26 March 2020
Version Reviewed and updated by Dr. Anaand Baskaran, 02 May 2020

Sexually transmitted infections are a very frequent and under-diagnosed cause of illness worldwide. A high number of detection methods and a large range of specimens in which sexually transmitted infections can be determined are available at the moment. Polymerase chain reaction (PCR) can be performed on first void urine, throat swab, vaginal and cervical swab, anal swab offer the advantage of being non-invasive, self-collectible and high sensitivity and specificity.


Most of the time, people with sexually transmitted infections do not have any symptoms, this is called asymptomatic infection which means the person carries infections without having any symptom but is able to pass it on to their partners through kissing, oral sex or even unprotected anal and vaginal sex.


Asymptomatic testing, getting tested even though you don't have any symptom, is a good idea to make sure you DO NOT have any infections hidden in your throat, vaginal canal and cervix, urethra and urine as well as rectal canal. If the test detects the presence of DNA of any bacterial or viral STIs, it will be a good chance for you to start treatment in time and tell your partner to get tested and treated accordingly as well to break the chain reaction and prevent further transmission to other people. This is a very helpful way to reduce STI transmission in the community.


Nucleic-acid amplification tests, also known as NATs or NAATs, are used to identify small amounts of DNA or RNA in test samples. They can, therefore, be used to identify bacteria, viruses, and other pathogens even when the material of interest is present in very small amounts. When it comes to STD testing, there are NAAT tests available that can detect a variety of different STDs. In fact, most urine tests for STDs are performed using nucleic-acid amplification tests.



PCR stands for Polymerase Chain Reaction  or Nucleic Acid Amplification Test (NAAT) is a modern molecular technique used to detect a particular pathogen (virus or bacterium) in a specimen of blood, body fluid or other tissue. This technique detects virus/bacterial’s DNA. The nucleic acid amplification test (NAAT) is the recommended method of testing for Chlamydia, Gonorrhoea, Ureaplasma, Mycoplasma, Trichomonas, among other infections. It has very high specificity (higher than 99.5%) Higher sensitivity and accuracy than culture (old and conventional diagnosis method). In both men and women, Genital PCR and Urine PCR shows significantly higher sensitivity rate compared to culture. First-world countries and most of the progressive nations has been implementing this technique for high accuracy of detection.



in people who has infection with symptom (symptomatic infection) and without symptoms (asymptomatic infections), DNA PCR TEST can detect;

Chlamydia trachomatis (serovars A-K) which causes chlamydia

Chlamydia trachomatis (serovars L1-L3) which causes LGV or Lymphogranuloma venereum

Neisseria gonorrhoeae which causes Gonorrhea

Trichomonas vaginalis which causes Trichomoniasis

Mycoplasma hominis 

Mycoplasma genitalium (an emerging STI)

Ureaplasma urealyticum (read more)

Ureaplasma parvum (read more)

Herpes Simplex Virus type I (read about Herpes Simplex Virus)

Herpes Simplex Virus type II,

Treponema pallidum which causes syphilis

Haemophilus ducreyi which causes chancroid

- Cytomegalovirus 

- Lymphogranuloma Venereum


Which part of the body or area I need to get tested for asymptomatic infections using PCR DNA test?

Let's think about how we use our part of body to give ourselves (and our partners) pleasure. 


Kissing and oral sex in general can contribute to multiple different forms of STI's which can be easily localize on your tonsil glands. One of the bacteria's favorite breeding ground. Over the oral cavity,  we perform a swab, gently rubbing it (small cotton bud) on the back of the throat, on the tonsils, and in any other area where there might be redness, inflammation, formation of exudates or pus. Throat swab can detect 14 infections as mentioned above. There are no risks or complications associated with a throat swab culture. The test may cause momentary gagging because the back of the throat is a sensitive area, but it shouldn’t be painful.



Doesn't matter if you are a man, a girl or a transgender-women, if you like it from the back or simply enjoy anal fun, the infections from your partners (or toys, hands, or gloves when fisting) can localize on the surface of anal canal or rectal tissue. Don't be too embarrassed to discuss about your rectal health and safe anal sex practices with your doctor (We've seen many holes before and you won't be the last). To collect the specimen, a small cotton swab is placed into the anal canal and the rectum. The swab is rotated gently, removed and put in a sterile container to be sent to our lab. There may be pressure as the swab is inserted into the rectum. The test shouldn't cause you any pain, we are always gentle and handle with care.



We're talking about woman and transgender - women, vaginal canal can be a perfect medium to host STI party and a matter of fact, STI's amongst transgender-women do not differ from the non-TG population unless there are other risks factors involved. To collect the specimen, a small cotton swab is placed into the vaginal canal. The swab is rotated gently, removed and put in a container to be sent to our lab. 



Urine testing for STIs is becoming increasingly available. These days, 14 STIs can be detected using urine testing. Urine PCR test is a lot more pleasant than urethral or cervical swabs (the old technique which was painful and uncomfortable) and are quickly becoming standard practice. Urine testing, as opposed to swab testing, makes it easier for people to undergo STI testing as part of their regular medical care. To collect the specimen for testing, YOU JUST HAVE TO PEE!

Here are the steps starting from Registration >> Receive the urine container >> go to toilet >> do not wipe or clean your penis/vagina >> open the container >> pee the first stream urine until it’s filled halfway >> place urine container in specimen bag >> wash your hands  >> leave the sample in the toilet >> pay >> confirm email address >> Sashay away.




If you want to look for any possible infection in your urethra and urinary tract, you have to chose URINE PCR  FOR 14 INFECTIONS  which requires you to provide us with your urine sample.

If you performed oral sex and want to check any possible infection in your throat, you have to chose THROAT SWAB PCR FOR 14 INFECTIONS which will be assisted by our staff.

If you happen to be female who enjoy anal sex without condom, men who have sex with men, and bottom for anal sex without condom, then you have to chose ANAL SWAB PCR FOR 14 INFECTIONS which will be assisted by our staff.

If  you are female who have vaginal sex, then you have to chose Vaginal Swab PCR FOR 14 INFECTIONS, which will be assisted by our staff.


For normal PCR for 14 infections service, PCR test takes 3-5 working days. The results will be sent to your email address given to our clinic.
For normal PCR for 2 infections(Gonorrhea and Chlamydia), PCR test takes 3 working days. The results will be sent to your email address given to our clinic.



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