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After a gap of how many days can I take a HIV test ?

Within how many day s virus can bee seen in blood ? My Name is Shankar Sharma. I am from Nepal & I am 30 years old & I m married person. I have one 5 years old son. My problem is- 2 days ago I have sex with my old girl friend without using condoms. I think she can also doing sex with other persons. She is quite healthy. So, I think she has no any sexual problems . Now i m very tnes, because I hav t using condoms. I would like to check my blood, to find my blood is negative or positive. Within how many day s virus can bee seen in blood ? Plz solve my problem, I m in big prblems.
Asked On : Sun, 20 Feb 2011
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General & Family Physician 's  Response
It's important to have an HIV test if you think you have been at risk of HIV infection.There are effective treatments available that slow the growth of the virus. Being diagnosed soon after you are infected can help you get the best out of the treatments.
The test for HIV is a blood test. It measures antibodies to HIV that are the body's immune response to the HIV. The test used most commonly for diagnosing infection with HIV is referred to as an ELISA. If the ELISA finds HIV antibodies, the results must be confirmed, typically by a test called a Western blot. HIV antibody tests remain the best method for diagnosing HIV infection. Antibodies to HIV typically develop within several weeks(3 months) of infection. During this interval, patients have virus in their body but will test negative by the standard antibody test, the so called "window period." In this setting, the diagnosis can be made if a test is used that actually detects the presence of virus in the blood rather than the antibodies, such as tests for HIV RNA or p24 antigen. Recently, a new test has been approved that measures both HIV antibodies and p24 antigen, shrinking the duration of the window period from infection to diagnosis.

Answered: Mon, 21 Feb 2011
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