HIV & AIDS

Award winning clinic for healthcare and professional excellence quality standards in 2016 & 2018

In Open House we carry out four different HIV tests. To know which test is relevant according to your case, you must take into account the so-called window period, which is the time from the risk contact you want to monitor until you can perform the test. Depending on this period, we guide you on what you can do.

I want to do an HIV test and the last sexual contact happened…


  • Less than 3 days ago
  • Between 3 and 10 days
  • Just 10 days have gone by
  • Just 4 weeks have gone by
  • More than 3 months ago
Less than 3 days ago

If 3 days have still not gone by since the last high risk contact, a possibility exists which consists in administrating anti-HIV mediation to dramatically reduce the possibilities of infection. This treament is not for everybody, nor for all kinds of sexual contacts but ….

– if you have had vaginal or anal sex with someone who you know has HIV
– if you have had passive anal sex with someone with an unknown HIV status

It may be possible that you are a candidate. You must go to the Emergency Room of any hospital in the first 72 hours and ask for their help.

Between 3 and 10 days

If three days have now gone by then the possibility of administering “shock treatment” is no longer an option (see the previous section). But if you still haven’t reached the 10 days cut-off point then we are unable to do the PCR test (see the next section)
You will have to wait a few more days which may seem like a torture, but in our experience when most people read for the first time about the true risks of HIV in each kind of sex (oral, vaginal and anal) they feel calmer.

If you’re not sure if the sex you have had is considered a risk for HIV, this information is available in our website.

Just 10 days have gone by

If only 10 days have gone by then you can do the sensitive PCR test.
This test looks for the genetic material of the virus. The detection with this test after 10 days rounds 99%. All studies have found that after 21 days the detection with this test is 100%.

What is the advantage of doing this test at Open House Madrid?
A medical consultation and follow up with the results is always included in the price if you come to see us in Madrid. This test takes just 90 minutes to perform and it is the fastest and most accurate way of detecting the HIV virus with such a short time of window-period.

Call us to book an appointment at Open House Madrid to do this test 190€

Can I do this test without going to Madrid?
Yes, we can organize for your blood to be taken in a clinic in your region. They will send us your blood for testing at Open House and then we will get the result back to you by email within 90 minutes or 24h after receiving your sample.

  Visit our online shop to purchase this test 160€

Can I do this test from home?
Unfortunately we can’t do this test from home. There are other HIV tests that we can do from home, such as the version of this test we do after 3 weeks (of window-period).

Just 4 weeks have gone by

If you wait 4 weeks since the possible risky contact, we use a different test to mantain high detection levels. This HIV test looks for antibodies and the p24 antigen (a protein that we see in early HIV infections). This technique detects between 97 and 99.99% of all cases of VIH.

What is the advantage of doing this test at Open House Madrid?
A medical consultation and follow up with the results explained by our specialist doctors is always included in the price if you come to see us in Madrid. This test takes just 20 minutes to get the results.

Call us to book an appointment at Open House Madrid to do this test 130€

Can I do this test without going to Madrid?
Yes, in one of our satelite laboratories around Spain. They will take your blood and once we get your sample here at Open House, you will recieve the results in 20 minutes.

Click to purchase this product in our online shop and select a centre near you 110€

Can I do this test from home?
Unfortunately we can’t do this test from home. There are other HIV tests that we can do from home, such as the version of this test we do after 3 weeks.

More than 3 months ago

HIV antibody tests
If more than 3 months have gone by then an antibody test is sufficient. Detection is extremely high with these tests (up to 99.99%)

What is the advantage of doing this test at Open House Madrid?
A medical consultation and a follow up with the results is always included in the price if you come to see us in Madrid.
The test takes just 20 minutes to perform.

Call us to book an appointment at Open House Madrid to do this test 65€

Can I do this test without going to Madrid?
Yes, we can organize for your blood to be taken in a clinic in your region (subject to availability). They will send us your blood for testing at Open House and then we will get the result back to you by email in 20 minutes of receiving your sample.

Visit our online shop to purchase this test 55€


Write to Open House team

Responsible: CENTRO MÉDICO OPENHOUSE, S.L.U. Purpose: To respond to the queries mentioned. Authorisation: when the interested party gives consent. Recipients: Data will not be shared with third parties except under legal obligation. Rights: You have the right to access, rectify and supress your data, and other rights as indicated in the further information found in https://openhouse.es/politica-de-privacidad, which you may exercise by writing to the processing responsible person pablo.fernandez@openhouse.es

Our experience in HIV testing:


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HIV tests performed:


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Cases of HIV diagnosed:


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Percentage of false positive results (errors)

Confused by what you’ve read? Three suggestions

How can we help you?



Call us to book an appointment or get information

Caution! It is important to read about the Window Period before doing tests UNLESS YOU HAVE WORRYING SYMPTOMS

Please trust our clinical judgement. Open House has done nearly 72.000 STI tests.

What would you like to do now?


I want more information about the symptoms of HIV and AIDS and how it is transmitted



I want to know what is the risk of HIV in oral, vaginal, or anal sex



I would like to do a complete sexual health check-up



I’m in a relationship and have had sex with someone else – I’m very frightened!



I want to learn more about the window period



I don’t live in Madrid, take me to the online shop


Where to find us

Calle Atocha 117, Madrid

Metro: L1 Atocha / Antón Martín

Contact Us

Call Us - 91 429 49 59

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