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Frequently asked questions about STDs

General STD Information

Information about the most common types of STIs and whether it is wise to get tested.

If you've had unsafe sexual contact, you may have caught an STI. Unsafe sexual contact includes both the sex itself (penetration) and oral sexual contact (blowjob, pussy or rimming) without a condom. Even if the condom breaks during sex, you can catch an STI, so contrary to what is often thought, you can also catch an STI through oral sexual contact. Oral transmissible STIs include chlamydia, gonorrhoea and syphilis.

You can also catch STIs such as herpes and genital warts despite the use of a condom. These conditions can also be transmitted on the basis of direct skin-skin contact. If you have had unsafe sex with a paid sex partner or a contact abroad, you are even more likely to have contracted one of the less common STIs, such as HIV, hepatitis B or syphilis.

If you have had such a contact, please feel free to contact one of our specialized doctors for more information.

An STI test is the only way to be sure that you have an STI or not. You can have an STI without being bothered by anything, but then you are contagious to others. It is therefore wise to have an STI test done when:

  • You've had unsafe sex
  • You have symptoms such as warts, blisters, burning puddles or more discharge than usual.
  • The condom is torn.
  • You have a new relationship and want to make love without a condom
  • You've been warned
  • You are pregnant and do not want to pass on an STI to your child

You can have an STI without noticing it and still have complications such as infertility. So only a test can tell whether you have an STI after a certain period of time. You should always take into account a so-called Window time. The time after which an STD can only be detected. Want to know more? Call us for a consultation: 085 070 3483

In the Netherlands, the biggest risk of STDs is Chlamydia and Gonorrhoea. Research by the GGD shows that in 2016 14.5% of all people who did an STI test were found to be infected with Chlamydia Trachomatis. Gonorrhea was found in 11.3% of men having sex with men. For both heterosexual men and women, the share 'only' was 1.7% and 1.4%.

You can prevent contracting an STI by having safe sex. Safe sex is sex with a condom. Both in sexual intercourse (vaginal or anal penetration) and in oral sexual contact (pussy, blowjob and/or rimming). A condom or flip-flap that has been cut open is also used for protection in the case offfension. In case of anal sexual contact it is important to choose a condom that is specially made for this purpose. In case of anal sexual contact, an ordinary condom can rupture more quickly. You can't get STIs from caressing, kissing, cuddling, masturbating or satisfying others by hand.

Do you have a steady partner? Then you can both take an STI test to see if either one of you has an STI. If both of you don't have an STI, you can consider sex without a condom safe. Both of you must not have sexual contacts outside of the relationship and you must be able and willing to trust each other on this. If you don't want to have children (yet), take into account an appropriate form of contraception. At OneDayClinic you can come and test alone or with your partner.

STIs are transmitted via blood, vaginal fluid, sperm and in contact with or from the mucous membranes. Mucous membranes are found in the vagina, penis, anus and mouth.

The most important factor in an STD infection is contact between mucous membranes, in which sperm plays the main role as body fluid. That's why condoms offer the best protection against an STD. More than 93% of HIV cases are prevented by the use of a condom. The chance of contaminating highly contagious gonorrhoea also decreases by 62% if you use a condom. When using a condom, it is important to put the condom on before any contact with the mucous membrane can take place. After removing the condom, there should be no more contact. Nothing stops 100% of STIs, but this is the most common contraceptive.

Information SOA test

Here you will find general information about the types and
costs of an STI (home) test.

    • A basic test (gonorrhea test and chlamydia test)

An infection with the STI chlamydia or gonorrhoea can be reliably diagnosed or ruled out after more than 10 days.

Do you have any complaints that may suit an infection with chlamydia/gonorrhoea for the period of 10 days? If there are any complaints, consideration may be given to taking the test earlier. If there is any evidence, we can start treatment sooner. A control test 4-6 weeks after the treatment is then recommended. It is also possible that, despite the symptoms, we still cannot find the infection because of the shorter period of time. In that case it is wise to repeat the test after the 10-day period.

    • An extensive STI test (HIV, hepatitis B/C and syphilis):

We recommend testing an infection with an STI such as HIV, hepatitis B/C and syphilis after approximately three months.

    • HIV can be tested from 6 weeks after the unsafe sexual contact.

However, this is a preliminary result. It is therefore recommended that the test is repeated after a period of 12 weeks. A four-week test is therefore wise if you have had high-risk contact (e.g. contact with someone who has HIV). You want to detect the infection as soon as possible. If this is not the case, the 12-week period is usually the best period for testing. Even if you are considering another form of HIV-rapid test with another provider, it is recommended to do a combination test as we do after 12 weeks. Read more about the combination test here. If you have any questions about the best time to take an HIV test, please feel free to contact one of our specialist doctors. This can be done by phone, mail or via our facebook page (facebook messenger).

    • Hepatitis B and C can be tested from 8 weeks.
    • Syphilis can be shown to be completely reliable after 12 weeks.

Because of these terms, we recommend testing the blood test (HIV, hepatitis B/C and syphilis) after 12 weeks or as much as 3 months for complete reliability of all tests.

  • HIV-RNA Rapid test:

You can do this test 10 days after the sexual contact. Click here for more information about the HIV RNA rapid test.

At OneDayClinic, anonymity is important to us. That is why you can make an anonymous appointment with us to have an STI test taken in our STI clinic in Amsterdam, Utrecht, Den Bosch or Rotterdam. You will receive the results of the test within two working days.

A statutory excess of € 385 applies to the health insurance in 2018.

The cost of an STI test at the doctor's varies from 40 euros for a single chlamydia test to as much as 300 euros for several expensive STI tests. It depends on your health insurance and the amount of your deductible how much money you eventually lose.

The Municipal Health Service (GGD) is an institution where you can go for a free STI test. However, not everyone can get a free STI test at the GGD. An STI test is free at the GGD as:

  • You're under 25 years old;
  • A man has sex with men;
  • You're a sex worker;
  • Have been warned by a (former) bed partner who has been tested positive for one or more STIs;
  • You come from a country with a lot of STIs.

Read more about free STI testing on our blog.

You can buy an STI home test at many pharmacies, drugstores or online. The costs for an STI home test vary from 20 euros for a single test to 300 euros for several expensive STI tests. Not only the price differs, but also the quality. Read more about the STI home test here.

No, an STI home test is more often unreliable than reliable. The largest social organization in the Netherlands called SOA Aids Nederland, works together with the GGD and Sense on the preservation of the overall sexual health in the Netherlands. They advise not to do a home test but to make a physical appointment with a doctor.

A combined study by STD-AIDS Netherlands and RIVM showed that only 25% of the STI home tests offered scored sufficiently well on reliability. In other words: three of the four STI self-tests that are offered online are not reliable enough.

All tests done by the OneDayClinic are done by a specialized physician and tested in a certified laboratory. A test at the OneDayClinic is therefore of the same quality and reliability as a test at your GP, hospital or GGD.

Read more about this in our home testing blog.

SOA Complaints and Symptoms

Here you will find information about STI complaints and symptoms.

An STI can also cause symptoms, for example: yellow-green discharge complaints, burning puddles, warts, blisters, sores or pain in the lower abdomen.

The complaints you may experience depend on the type of STI. We would like to emphasize once again that you do not need to have any complaints despite the fact that you may be infected with an STI. The most common/known STIs are: chlamydia, gonorrhoea, HIV, hepatitis B, hepatitis C, syphilis, herpes, genital warts, mycoplasma and trichomonas.

Below is a brief overview of complaints per STI. If you have any questions, please feel free to contact one of our specialist doctors. This can be done by phone, e-mail or via our Facebook page (Facebook messenger).

In practice, these STIs are often more difficult to distinguish from each other in terms of symptoms. The most common of these two is chlamydia. Matching complaints are the following:

  • Both men and women:
    • Burned, painful or altered sensation when urinating
    • Pain in the groin
    • Itching or irritation of the anus
    • Bloody discharge at the faeces
    • Abdominal pain
    • Fever
    • Inflammation/pain in joints
  • In men:
    • Separation in the form of mucus or pus also known as a drip
    • Bloody or altered sperm composition
    • Swell/redness of the scrotum
  • With women:
    • Changed discharge.
    • Intermenstrual blood loss or blood loss during / shortly after sexual contact

Click here for more information about chlamydia.
Click here for more information about gonorrhoea.

  • Complaints similar to flu
  • Fever
  • Skin rash/itching
  • Feeling of fatigue/malaise
  • Night sweats
  • Diarrhea
  • Weight loss

Click here for more information about HIV.

  • Fatigue
  • Jaundice
  • Nausea
  • Loss of appetite
  • Muscle and joint pain

Click here for more information about hepatitis B and C.

  • First stage (2-12 weeks):
    • Passing painless ulcer on the penis or the mucous membrane of mouth and/or anus.
    • Mounted lymph nodes.
  • Second stage (after the disappearance of the ulcer):
    • Spots all over the body but mostly on the soles of the feet and palms of the hands.
    • Bare patches between your hair growth.
    • Eye inflammation and reduced vision.
    • White grey, wart-like spheres in the penis, anus or vagina.
  • Third stage (up to 30 years after infection)
    • Inflammation and damage throughout the body
      • Particularly to: heart, brain, spinal cord and bones.

Click here for more information about syphilis.

  • Women:
    • Changed separation
      • Other odor
      • Yellow/green light foaming discharge
    • Pain/itching or burning sensation during sex
  • Men:
    • Separation from the urethra
  • Both men and women:
    • Pain, itching or burning when urinating.
    • Irritation to vagina/penis
    • Inflammation/irritation of the urethra.

Click here for more information about trichomonas.

  • Mycoplasma
  • Women:
    • Pain while urinating.
    • Pain in the pelvis or abdomen.
    • Intermenstrual blood loss.
    • Pain during sex.
    • Increased discharge.
  • Men:
    • Pain in the testicle
    • Separation from the urethra.

Click here for more information about mycoplasma genitalia.

  • Stalked or cauliflower-shaped small warts in the region of the genitals and/or the anus.
  • Skin colour, darker or greyish in colour.

Click here for more information about genital warts.

  • Burned blisters/sores on the mucous membrane of your genitals, anus and/or mouth.
  • Pain may worsen during urination.
  • Fever
  • Mounted glands

Click here for more information about herpes.

Yes, you can. After every unsafe sexual contact you may have contracted an STI. Especially chlamydia can be present without any symptoms. It is therefore advisable to have an STI test carried out after unsafe sexual contact. If you have any questions about your situation, please feel free to contact one of our specialized doctors for more information. This can be done by phone, mail or via our Facebook page Facebook messenger).

Also read our blog about STI testing without complaints for more information.

The complaints that occur with an STI are often 'vague' complaints. Sometimes you don't even have complaints when you have an STI. Blood loss during or after sex and blood loss between menstruations due to Chlamydia and Gonorrhoea are a common complaint.

If you experience symptoms such as a burning sensation, pain when urinating, itching, abnormal discharge, loss of blood during after or after sex, loss of blood between menstrual periods, mucus or pus, it is always wise to test for STIs.

Click here for more information about blood loss and the risk of an STD or here for more information about abnormal discharge.

If you suffer from itching in the vagina or itching around the anus, it is always wise to take an STI test.
The complaints that occur with an STI are often 'vague' complaints. Sometimes you don't even have complaints when you have an STI. Itching is a common complaint in Chlamydia and Gonorrhoea. Both men and women can experience these complaints.

Would you like to know more about this? Check out our blog by clicking here.

Other questions about STDs

All other questions about STDs can be found here.

Heb je een soa, dan is het belangrijk dat je je partner(s) waarschuwt. Waarschuw niet alleen je huidige partner, maar ook je ex-partners. Zij kunnen de soa ook hebben zonder dat zij klachten hebben. Ze kunnen deze weer ongemerkt doorgeven aan hun partners. Door je partners te waarschuwen, voorkom je dat de soa verder verspreidt of dat zij te maken krijgen met ernstige gevolgen doordat zij niet behandeld zijn. Indien je niet zelf durft je seks partners te waarschuwen, kan dit ook via www.partnerwaarschuwing.nl. Je krijgt een code van de arts, met deze code kan je al dan niet anoniem gaan waarschuwen.

Swingers are more likely to have unsafe sexual contact and therefore run a higher risk of contracting an STD.

Often a condom is used for penetration, but in case of oral sexual contact swingers often indicate that they do not use protection. Oral sexual contact can also cause an STD. Chlamydia and Gonorrhoea are the most common STDs in the Netherlands and can be transmitted through oral contact. Torn condoms and no switching of the condom between different contacts or sex toys can also cause an STD transmission. If you swing, or if you have sexual contact with swingers, it is wise to have yourself tested regularly for STDs.

Want to know more? Take a look at our page about STI testing for swingers.

Sex workers run a higher than average risk of contracting an STI. Often a condom is used for penetration, but in case of oral sexual contact sometimes no protection is used. You can also get an STI from oral sexual contact. Chlamydia and Gonorrhoea are the most common STIs in the Netherlands and can be contracted through oral contact. Torn condoms and no use of condoms for sex toys can also cause an STI transmission. If you are a sex worker, it is wise to have yourself tested regularly for STIs. In this way, you can avoid unpleasant long-term consequences such as infertility, and you can prevent STI transfers.

If you want to know more, click here.

Homosexuals (or men who have sex with men) are more likely to have unsafe sexual contact and therefore run a higher risk of getting an STD.

Often a condom is used for penetration, but in case of oral sexual contact often no protection is used. You can also get an STD from oral sexual contact.

In the LHBT community, freedom in love and freedom in the sexual field are more common than average. One-night stands and varying sexual contacts are common. A condom is often seen as the 'killer' of a moment full of tension and is often forgotten. Sometimes it is simply preferable to have sex without a condom. If you have (often) changing sexual contacts and you don't always use protection, it is wise to have yourself tested regularly for STDs.

For more information, see our SOA Blog.

Yes, always do an STD test before placing a intrauterine device (IUD) if you are not sure that you are free of STDs.

The intrauterine device (IUD) is becoming increasingly popular among both young and older women. In 2017, one in six women between the ages of 18 and 49 used this form of contraception. But did you know that it can be dangerous to place a spiral if you have an STD? This can lead to inflamed fallopian tubes, an ectopic pregnancy and even to infertility.

Read more about doing an STD test here if you want get an intrauterine device.

The STD test at OneDayClinic

Information on how the STI test OneDayClinic works and the results.

Fill in the STD test guide and get immediate advice about the tests.

After you have made the appointment, there will be a confidential conversation with the doctor. During this interview a number of personal questions will be asked to assess the risk you have run for STDs. Based on these risks, the doctor will give advice on which tests should be taken in your situation. Together with you, a decision will be made about which tests you want to take in the end.

    • The conversation

Upon arrival we will discuss the STI test with you. You don't have to tell us anything you don't want to tell us. The purpose of the interview is to indicate what your options are and what are important issues to take into account for a reliable outcome of the test (for example: whether you actually did not urinate 1.5 hours in advance, the period between unsafe sexual contact). Depending on this, you can (together with us) choose the best test for you in your situation. Of course you can ask us any questions you may have about the test. Our goal is always to make the conversation as close as possible to your wishes and expectations. The entire interview and the test are of course completely anonymous.

    • The basic test (chlamydia test and gonorrhea test)

A basic test (chlamydia/gonorrhoea) may have been performed at several locations. What is meant by locations are the mucous membranes with which you have been sexually active in an unsafe way. You can contract both chlamydia and gonorrhoea in your mouth (orally), in your genitals (penis/vagina) or at the anus (anal).

      • Genital test:
        • Men: Urine test.
          For men, the test can be done in the urine. Therefore, men should not take urine or morning urine 1.5 hours before the test.
          In the case of morning urine, the following is important: Pee in a clean jar or bottle. The first bit of urine contains the most bacteria in the presence of an STI, so urinate directly in the bottle/pot. Approximately 50 ml is sufficient.
        • Women: (self)swab
          For women, the test is taken by means of a swab/watten rod. In principle, you can purchase the swab yourself (even the swab). If you are uncomfortable with this, the test can also be taken by our specialist doctor.
      • Oral and anal test:
        • For men and women: (self)swab
          The oral and anal tests are done by means of a swab/watten rod. The oral test is always taken by one of our doctors as it is difficult to take it yourself. The anal test will be explained to you, after which you have the choice whether you want to (try to) take it yourself or whether you prefer to get help with it from our specialist doctor.
    • The extensive STI test
      The extensive test for HIV, hepatitis B/C and syphilis is done by means of a blood test. For this test one tube of blood has to be taken.
    • The rapid test (chlamydia test and gonorrhea test)
      With the gonorrhea and chlamydia rapid test, you turn in urine and you have the results in 90 minutes.
    • The HIV RNA rapid test
      Blood is taken from the HIV RNA. You'll get the results in 90 minutes.

You will be asked a number of questions: whether you have sex with men, women or both sexes and whether you have had oral, anal or vaginal sex. This is because the STIs chlamydia and gonorrhoea can occur in different locations in your body. Infections with these STIs, caused by bacteria, remain fairly local and do not just spread through your body or blood. You may have contracted chlamydia in your anus and not in your throat, but you may have had anal and oral sex. Allergies to antibiotics and medication use are asked because if you have an STI you can also be treated in our clinic and these questions are essential.

When making an appointment, it is important to take into account the window phase. The window phase is the period between the sexual contact (possible moment of infection) and being able to detect the infection with the test. For testing for chlamydia and gonorrhoea we keep 10 days to two weeks after the sexual contact (on indication this is sometimes possible earlier). For HIV, syphilis, hepatitis B and C we keep a minimum of 6 weeks. It is always advisable to repeat the blood test after 3 months.
The man shouldn't have been to the toilet or taken morning urine for at least 1.5 hours.

Physical examination is often not necessary. HIV, Syphilis and Hepatitis B and C are excluded by means of a blood test. Chlamydia and Gonorrhoea are tested in the man's urine and in the woman's urine by means of a 'self-swab' (i.e. with a cotton swab). If oral and anal sex has taken place, it is excluded via an anal swab or a throat swab. You can do this yourself, but you can also leave this to the doctor.


  • Urine test The test for Chlamydia and Gonorrhoea in men can be done with the aid of a urine sample. When you are infected, bacteria can be found in the urine in particular. In women, a self-swab is more reliable than a urine test.
  • Blood tests for
    Syphilis, Hepatitis B, Hepatitis C and HIV can be demonstrated by means of a blood test.
  • Selfswab smear
    A smear removes moisture from the vagina. This will determine the presence of Chlamydia and Gonorrhoea. This doesn't hurt. Because Chlamydia and Gonorrhoea can be found in different locations (vaginal/channel/throat), additional swabs may need to be taken. The doctor will determine in the initial interview whether this is necessary.

Do you have complaints that indicate an STI or have you had unsafe sexual contact? Then don't wait and make an appointment for an STI examination.

If you take the test early in the day, we often have the results for you the next day. The period between the test and the result at OneDayClinic is always a maximum of two working days. You can view the results online via our test results portal. Enter the 8-digit code with your date of birth as a check to get your results. Results come online daily after 18.30 hours (during working days). Your results will be removed from our portal after 2 weeks.

The results of the quick tests are known after 90 minutes, you will receive these results by phone. You can call yourself or you'll be called.

Click here to view your test results directly. 

Costs and Treatment

Information about the costs and treatment of STIs at OneDayClinic.

All tests at OneDayClinic start with a basic price for the consultation. This includes the consultation and other logistics and administration necessary for your appointment. The rate for a consultation is 50 euros. A basic test on gonorrhea / chlamydia costs 50 euros for 1 location* at the OneDayClinic. A basic test on gonorrhoea and chlamydia will cost you 100 euros.

Click on the table below to see the prices.

Gonorrhea/Chlamydia
1 location 100 euro
2 locations 135 euro
3 locations 170 euro
1 extra location 35 euro

Gonorrhea/Chlamydia/HIV/Syphilis/Hepatitis B and C
1 location 150 euro
2 locations 185 euro
3 locations 220 euro

Contrary to what many people think, an STI test at a doctor's is not free of charge. However, the actual research is not free of charge. The costs for this are deducted from your own risk. Want to know more? Then click here.

At OneDayClinic you can pay in cash or by debit card. The ATMs accept both Maestro and VPay. The ATMs do not accept credit cards or foreign debit cards with another acceptor such as Maestro or VPay. When paying in cash, please try to take the money with you in the most appropriate way.

Yeah, it is. At our clinics we treat the most common STIs. So we have a treatment for chlamydia, gonorrhea, mycoplasma, trichomonas and genital warts and Syphilis. If you have taken a test and you have contracted one of the other STIs (HIV, hepatitis B/C ), we will refer you to the hospital/GGD for treatment.

Chlamydia, gonorrhoea and syphilis can be treated with antibiotics. For this treatment you can also contact the OneDayClinic. However, HIV is more difficult to treat. There are medicines to suppress these STIs and their symptoms, but not to remove the viruses from the body. OneDayClinic will guide you for further treatment and refer you to a specialist in the hospital.

About OneDayClinic

All general information about OneDayClinic can be found here.

There are several advantages to a test with the OneDayClinic compared to an STI test with a general practitioner or the GGD. Our tests are anonymous, our locations discrete, we are cheaper than the general practitioner, you can go straight to the clinic (no waiting time), you will receive the results within a maximum of two working days (often even the next day) and the OneDayClinic has very long opening hours. So we are also open in the evening and in the weekend.

For more information see our page on STI testing at the OneDayClinic instead of at the doctor's and our blog about STI testing at the GGD (free STI testing, what about?).

  • Basic package: Gonorrhoea and Chlamydia
  • Rapid test for Gonorrhoea and Chlamydia (not included in Amsterdam) Results 90 min.
  • Only blood (serology) HIV, Syphilis, Hepatitis B and C
  • Complete test HIV, Syphilis Hepatitis B and C, Gonorrhoea and Chlamydia.
  • Mycoplasma, Trichomonas,
  • HPV
  • HIV  RNA Sneltest uitslag 90 min (exclusief in Amsterdam)
  • Verschillende Corona testen: PCR, Antigeen sneltest.

We test for HIV/Aids by means of the fourth generation HIV test. This test is a combination test that reacts to the virus, to antibodies that are quickly present in the body and to antibodies that arise later (after four to eight weeks). In many cases this test is done after four weeks of contact. This test then gives a provisional result.

You can also take an HIV RNA rapid test with us, in which a test is possible after only 10 days after the sexual contact (only possible in Amsterdam).

Read more about our HIV test and the HIV RNA rapid test here.

All branches of OneDayClinic are located in a discrete location. In this way we make it as easy as possible to enter our premises without running a great risk of someone recognizing you.

Do you want to make an appointment? This can be done by phone or online. You can make an appointment on the basis of a first name. However, you may enter any name you want. This doesn't have to be your real first name. The same applies if you physically come to the location to do the test. You can test here again under an alias. The data that we link to this are only the necessary data and therefore cannot be linked back to you. You can even pay the test in cash so that no digital transaction has taken place.

During the appointment you will receive a barcode and with this barcode and the date of birth you have entered you can request your results on our website after 18.30 via this link.

If you are positive for an STI, you can schedule an appointment for the treatment online or by phone.

All our locations are discreetly located in a medical center. The locations are equipped for medical care and contain all the necessary equipment to perform your STI test. For example, all our locations have separate toilets with all the necessary equipment for disinfection. In addition, all of our treatment rooms have facilities for water so that you can wash and refresh your hands at the end of the examination. The meeting rooms are soundproofed and also closed off from the outside world in order to guarantee your anonymity.

Every branch of OneDayClinic also meets strict requirements for quality, safety and reliability. For example, OneDayClinic applies strict hygiene guidelines. The guidelines we use for this come from the NHG (Dutch General Practitioners Association) and are based on guidelines from the WIP Working Group on Infection Prevention and the RIVM and the protocols of the STI poli GGD which have been partly revised by the founder of Onedayclinic.

All materials are therefore removed with the highest care with protective gloves and sterile tubes/sealed sterile needles, which, as is only logical, are thrown away after each use. All materials are carefully separated from each other by means of a barcode system. All materials purchased will be linked to the application form for your specific STI test via this code. This means that materials can never be changed.

Our laboratory is an ISO certified medical laboratory. This certification is granted by the Dutch Council of Accreditation and is an endorsement of all requirements that apply to quality and competence for medical laboratories. A test at the OneDayClinic is therefore of the same quality and reliability as a test by your general practitioner, hospital or GGD.

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