HIV Blood Test, from our experts to you.
Dr Sam Rodgers MBBS, MRCGP

Chief Medical Officer meet our doctors

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What is the
Human Immunodeficiency Virus?

The Human Immunodeficiency Virus (HIV) is a viral infection. It is usually caught by having unprotected vaginal or anal sex with an infected person. HIV can also be passed on through blood (e.g. by sharing needles), and a mother can pass it on to her baby during pregnancy and through breast milk. HIV cannot be transferred by kissing, touching or through sweat or urine.


What does
HIV do?

HIV attacks the body's immune defences, gradually weakening its ability to resist infection and illness. If left untreated, it can lead to the development of AIDS (acquired immune deficiency syndrome) when the immune system becomes severely compromised.


When should I take
an HIV test?

We recommend taking this test after four weeks from potential exposure. The result will give a good indication of your HIV status. However, a small proportion of people tested at this stage will show false positive or negative results. For example, you may have been infected but have not yet produced an antibody response that could be detected by testing. Our test also tests for p24 antigen to improve the chances of finding an infection sooner after exposure. We recommend repeating this test to confirm the result at 12 weeks post-exposure. By this time, virtually all infected people (99.97%) will have produced antibodies that can be detected.


What's included?

Hiv
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HIV - 1 and HIV - 2 antibodies and P24 antigen

HIV antibodies are made by the immune system in response to infection with either Human Immunodeficiency Virus type 1 or 2. P24 antigen is a protein from the core of the HIV virus, it is found during the initial infection with HIV and disappears following seroconversion. This test will look for the presence of HIV antibodies and p24 antigen in the blood and will report whether they are detected or not.


How to prepare
for your test

Special instructions

Prepare for your HIV Blood Test by following these instructions. Take your test at least 4 weeks after any possible HIV exposure, a repeat test is recommended at 12 weeks. Do not take biotin supplements for two days before this test, discuss this with your doctor if it is prescribed.


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