The HIV Rapid RNA HIV-1 Quantitative test looks directly for the genetic material of HIV-1 in your blood, rather than the antibodies a standard test relies on, which makes it useful soon after a possible exposure. It suits anyone who wants a direct, rapid check on HIV status without waiting for an antibody response to develop. The test costs £238.75 plus a £50 blood-draw fee, with results back in 1 day. You can walk in or book online at 117a Harley Street, seven days a week, with no GP referral needed.
Doctors order an HIV RNA test after a recent possible exposure, such as unprotected sex or a needlestick injury, when someone wants an answer before an antibody test would reliably detect infection.
It's also requested by people who've had symptoms of a recent viral illness alongside a known risk factor, where a standard antibody test alone might not yet give a clear picture.
Some people choose it simply for reassurance and clarity as part of routine sexual health screening, particularly ahead of a new relationship or after ending one.
No fasting is needed for this test. Most people do not need to prepare in any special way, though you should follow any instruction your doctor has given you, and let the phlebotomist know if you're currently taking any HIV prevention or treatment medication, as this can affect the result.
A result showing HIV-1 RNA detected means the virus is present in the blood at the time of testing; a result showing it isn't detected is reassuring but needs to be read alongside your exposure history and any earlier tests, since timing matters with viral testing.
Your GP or a sexual health clinician is best placed to interpret the report against your personal risk and circumstances. If you test positive, or if you remain concerned despite a negative result, arrange a follow-up consultation promptly rather than manage it alone.
For HIV testing with window-period advice and a sexual health consultation, see HIV testing at Sexual Health Clinic London.
Written by Mr Stephen Lingam. Reviewed by Dr Mohammad Bakhtiar (GMC 4694470) on 24/09/2026.
A standard test looks for antibodies your immune system produces in response to HIV, which take time to develop. This test looks for the virus's own genetic material, HIV-1 RNA, directly in the blood.
No referral is needed. You can walk in or book online at 117a Harley Street, seven days a week.
Samples are sent to UKAS-accredited laboratories, and the clinic is CQC registered.
Call the clinic on 020 7183 0244 to discuss retesting or a follow-up consultation, since your history and the timing of any exposure matter to interpreting the report.