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what is the window period for hiv test?

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dear sir i want to now a days what is the window period for hiv test.

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replied November 28th, 2011
HIV and AIDS Answer A28912
Hello and welcome to e health forum.

The ‘window period’ is a term used to describe the period of time between HIV infection and the ‎production of ‎antibodies.‎ Once a virus, is detected by the immune cells of the body, antibody synthesis is initiated and it persists ‎‎‎as long as the virus is active in the body. ‎

‎‎97% of normal individuals with a good immune system, produce antibodies within 4-12 weeks and the ‎‎remaining ‎‎(3%) might produce the antibodies, around or after 6 months. ‎

It is extremely rare for a person to take any longer than 6 months to develop detectable antibodies.‎

In case a individuals have conditions that result in late production of antibodies - testing after 12 weeks or after 6 ‎‎months is advised. Most of these conditions are rare genetic diseases - and do present much earlier in life and ‎‎individuals will always be sick with respiratory and diarrheal infections throughout their life.‎

With respect to the testing for HIV, PCR for HIV DNA tests give a accurate reading after 2 weeks of exposure and ‎ELISA for HIV DNA are accurate after 4 - 6 weeks after exposure. ‎

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