HIV test

Microbiology

The information given here is intended for use by healthcare professionals. Please see Lab Tests Online-UK for more general advice, links and background
The current test detects both HIV 1 and 2 antigen and antibodies
It may take up to 3 months for sero-conversion to occur
Additional tests are performed on all HIV screening positive samples for confirmation.
Positive samples will require a second blood sample to be taken for additional confirmation
In the case of sharps/exposure incidents, same day testing of the source patient's blood is available. Please advise the laboratory.
Same day HIV testing in other circumstances is available. § For viral load testing, see HIV Viral Loads

Serum - paired samples not required

8.5ml of blood taken into a plain gel tube

Store at fridge temperature

Transport as soon as possible at ambient temperature

Negatives: up to 5 days

Positive results will be reported after all tests are completed and confirmed on both the initial and confirmatory sample