HIV Duo Combo

HIV Duo Combo Test

There are two types of test for detecting HIV. One is HIV test which will look for HIV 1&2 antibodies and the other is HIV duo combo test which is also known as p24 antigen & antibody screening test and 4th generation HIV test. The immune system will produce HIV antibodies to fight against the HIV virus, when a person is infected with HIV. So HIV test will only find the HIV 1&2 antibodies whereas the HIV Duo Combo test will detect both the p24 antigens and HIV 1&2 antibodies in the blood. The p24 antigens will appear in the blood within 2 weeks of infection while antibodies will appear between 2-3 weeks after infection. The p24 antigen are nothing but the part of the virus. However, the detection of p24 antigen is not dependent on the production of antibodies in the blood. Since the window period for the p24 antigen to appear is very short, this HIV test is done after the 4th week of suspected infection. This HIV test is the most reliable test because the accuracy rate for this test is 95%. So the p24 antigen will start to appear in blood around 14-20 days after infection. Therefore, a negative result for this HIV test can clear all your doubts and boost confidence.

FAQ's for HIV testing

What are the tests need to be taken for HIV testing?

The 4th generation HIV tests combine antibody and antigen testing

Whether this test to be carried in the blood sample or urine sample?

Blood

What is the window period for this test to be taken?

The Window period is different for different infections and tests.

Is there any chance that the person will develop the disease in future if the result is negative and do they need to repeat the test again after some time?

Repeat if in window period and ongoing risk of acquiring infection