HIV Early Detection Tests



Before to do any HIV test, you have to wait a period of time from the contact you want to check (window period). You can do the first HIV test by PCR method only 10 days after the risk contact, HIV antibodies & p24 antigen (4th generation test) if 4 weeks have passed and the standard antibodies test three months ago from the contact.

After purchasing the test, we will send you a referral slip to do the blood extraction at the chosen laboratory. The sample will be sent to Open House in 24-72 hours and we will send the results 90 minutes or maximum 24 hours after receiving the sample. If you choose Open House to collect your sample, you will get the result in just 90 minutes.

Open House Guarantee: in case of a positive result, you will get free advice with our specialist doctors.

Please read carefully the product description and the additional information before purchasing HIV tests.


Product Description

If only 10 days have passed since the risk contact, you can do the HIV test through the PCR method. This is the first test that can be done. It searches for the genetic material of the virus and detects 300 copies in every millilitre of blood. After 10 days, the detection rate is about 99% and false positives have not occurred yet. 21 days after the contact, the detection rate of this test becomes 100%, one of the few cases we can affirm this is 100% accurate in STDs detection.

If 4 weeks have passed since the risk contact, you can do the HIV antibody and HIV antigen p24 test, which is commonly called a fourth-generation test. This test looks for our body’s answer to the HIV virus (antibodies) and a protein of the virus (antigen p24). The rate detection of this technique is 97-99.99% and the figure of false positives is 1/3000 tests.

If 3 months have gone by the risk contact, you have to do the standard HIV antibodies test. This test looks for our body’s answer to the HIV virus (antibodies). The rate detection of this technique is 99.99% and the figure of false positives is 1/3000 tests. It is considered as the final HIV test, even in high-risk practices.

Service procedure:

  • Select the HIV test you want to do.
  • Complete the purchase, then you will receive an order confirmation email and your patient identification number.
  • You will also receive a second email with the referral slip to perform the blood extraction at the selected laboratory.
  • Go to the laboratory with the referral slip and get the extraction done.
  • We will receive your samples in 24-72 business hours and we will run the tests straight away.
  • We will send you the results by email in 90 minutes or maximum 24 business hours.

Important notes:

  • Coming to Open House to get your blood extraction done avoids the transport period. Therefore, you could get your results in just 90 minutes.

For any doubts please contact us at 914 29 49 59 in our opening times or visit the following informative sections:

Risk in sex. Which infections are relevant to oral, vaginal or anal sex?
I want more information about the different types of HIV tests 
Do you need a medical consultation with our doctors? You can have a medical consultation by phone
Test now or wait? Read about the window period


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