Sexual Health
HIV 1 & 2 / p24 Antigen
The HIV 1 & 2 / p24 Antigen blood test is a highly sensitive screening test used to detect Human Immunodeficiency Virus (HIV) infection. It identifies both HIV antibodies (types 1 and 2) and the p24 antigen, allowing for earlier detection than antibody-only tests. HIV affects the immune system by targeting CD4 cells, which are essential for protecting the body against infection. Early diagnosis allows timely treatment, helping individuals maintain long-term health and reduce transmission risk. The p24 antigen appears in the blood shortly after infection, before antibodies are fully formed. Including this marker shortens the window period and improves early detection. This test is widely used for routine sexual health screening, after potential exposure, or for reassurance. Many people do not experience symptoms in the early stages of HIV, making regular testing important. Any reactive result is always followed by confirmatory testing. A negative result provides reassurance based on the timing of the test and individual risk factors.
What's included
- HIV 1 & 2 / p24 Antigen
What is this test used for?
It is used to screen for HIV infection, including early-stage infection.
Who should consider this test?
Anyone who is sexually active, has had possible exposure, or wants to know their HIV status.
What do the results mean?
A negative result suggests no evidence of HIV at the time of testing. Reactive results require confirmation.
Do I need to prepare the test?
No fasting or special preparation is required.
Why Choose Marylebone Diagnostic Centre?
At Marylebone Diagnostic Centre, we offer confidential and supportive sexual health testing in a discreet environment. Our clinical team ensures careful sample collection and fast turnaround times.
We understand that HIV testing can feel stressful, which is why we focus on privacy, reassurance, and clear communication throughout your testing journey.
Frequently asked questions
When will I receive my results?
Should I discuss my results with a doctor?
