• Most common STD in the Netherlands;
  • Can cause infertility if left untreated;
  • Often causes little to no symptoms;
  • Has an infection risk up to 45% when having unprotected sex;
  • The incubation period is 14 days after being exposed to the STD.

What is Chlamydia?

Chlamydia is de meest voorkomende SOA in Nederland en wordt veroorzaakt door de bacterie Chlamydia trachomatisChlamydia is the most common STD in the Netherlands and is caused by the bacterium Chlamydia trachomatis. It is estimated to affect approximately 100,000 individuals per year, just in the Netherlands. Even though Chlamydia is widespread and extremely common, STDs continue to be a taboo topic and are seldom discussed openly. If Chlamydia is left untreated, it can have negative long-term consequences for both men and women.

How do I get Chlamydia?

Chlamydia can be transmitted through multiple forms of unprotected sexual contact and can cause an infection in the genital area (vagina and penis), throat, and anus. This means that Chlamydia can be transmitted through vaginal penetration, anal sex, oral sex, fingers, and using uncleaned or shared sex toys. The chance of someone transmitting Chlamydia when having unprotected sex is approximately 45%. 

Do I have Chlamydia?

Chlamydia does not always cause symptoms and one may remain asymptomatic throughout the entire infection period. It is estimated that about 70% of infected women and 50% of infected men do not show any symptoms when infected with Chlamydia. However, even without symptoms you can still be infected and transmit it to others, thus it is important to be wary of any changes in your body. Below are gender-specific symptoms for Chlamydia.

Symptoms in men include:

  • Abnormal discharge from the penis
  • Pain in the epididymis (i.e. swollen or pain in testicles)
  • Pain / burning sensation while urinating
  • Throat complaints (in case of an oral infection)

Symptoms in women include:

  • Excess or abnormal vaginal discharge
  • Pain in the lower abdomen
  • Pain / burning sensation while urinating
  • Pain during sex
  • Excess or abnormal vaginal blood loss 

Do you recognize one or more of the above mentioned symptoms? Order your own STD test through our webshop.

What are the risks?

One of the greatest risks of leaving Chlamydia untreated is infertility. This risk is significantly higher in women than men; it is estimated that approximately 1,000 women in the Netherlands become infertile as a result of this STD. For men complications often include inflammation of the epididymis and prostate. 

There is also an aggressive variant of Chlamydia which only occurs anally, also known as LGV (lymphogranuloma venereum). This variant is more prevalent in men who have sex with men (MSM) and is rare amongst women.

Wanneer moet ik me op Chlamydia laten testen?

Chlamydia has an incubation period of 14 days. This means that before this time the bacteria are often not detectable yet. If you would get tested before the incubation period the test result may indicate that you are not infected, when actually you are (i.e. false negative). Because of this, it is very important to wait for the full incubation period of 14 days before getting tested. 


Chlamydia can be treated with orally consumed antibiotics, which one depends on where you are infected: either in your genitals (vagina and penis), anus, or throat. At How Are You Diagnostics we can provide you the corresponding medication when you test positive for Chlamydia using our kits. We have a collaboration with a BIG-registered GP who can prescribe the medication to the pharmacy of your choice. Bij How Are You Diagnostics kunt u na afloop van uw test een certificaat downloaden met de uitslag. Indien u positief bent getest voor Gonorrhea kunt u dit certificaat aan uw huisarts tonen zodat u niet opnieuw getest hoeft te worden, maar direct een behandeling kan krijgen.

Op Chlamydia testen in 5 stappen

Download the HAY app

Nadat u de zelfafnametest heeft ontvangen kunt u de Chlamydia test doorlopen door middel van onze HAY app. Deze app is bedoeld om de door u aangeschafte zelfafnamekits te registreren en de resultaten van de laboratoriumanalyses aan u persoonlijk terug te koppelen op een beveiligde manier.


Download the HAY app here

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