Understanding HIV Testing
Human Immunodeficiency Virus (HIV) is a serious infection that attacks the immune system. Early detection is crucial for effective treatment and preventing transmission. Our private HIV testing service in London provides rapid, accurate results using the latest 4th generation diagnostic technology.
Fourth generation HIV tests represent a significant advancement in sexual health screening. Unlike older antibody-only tests, 4th generation assays detect both HIV antibodies produced by your immune system and the p24 antigen—a protein that appears in the blood during early HIV infection. This dual detection significantly reduces the window period, allowing earlier diagnosis.
The Window Period Explained
The window period is the time between potential HIV exposure and when a test can reliably detect the infection. With 4th generation tests, this window is approximately 18-28 days, though we recommend testing at 28 days for optimal accuracy. A conclusive negative result requires testing at 90 days post-exposure. This is significantly shorter than the 3-month window period required by older antibody-only tests.
What to Expect During Your Visit
HIV testing requires a simple blood sample collected via venepuncture by our registered nurse. The procedure takes less than 5 minutes and samples are immediately sent to our UKAS-accredited partner laboratory. Results are typically available from 24-48 hours and delivered securely via encrypted email. All testing is conducted with complete confidentiality—your results remain strictly private unless you choose to share them.
Why Choose Professional HIV Testing?
While home testing kits are available, professional laboratory-based HIV testing offers superior accuracy and reliability. Our venous blood samples provide optimal specimen quality, and UKAS-accredited laboratory processing ensures results meet the highest clinical standards. Additionally, our nurse-led service provides a supportive environment where you can ask questions and receive professional guidance.