AIDS self-testing paper to rule out the diagnosis of 3 months, AIDS self-testing paper to detect the antibody time in 2 weeks ~ 3 months ranging from 3 months after the negative basically can be ruled out. AIDS self-test paper is the use of colloidal gold immunochromatography technology developed a new generation of detection reagents, most cases of high risk 6 weeks when the window period can be passed, at this time the test negative can be ruled out the vast majority of infections. But individual differences, a small number of people window period can be up to 3 months, so for safety reasons, to 3 months as the upper limit, if the test is negative after three months can basically rule out infection. HIV self-tests are more accurate after the window period, but they can only be used as a reference and cannot be used as a basis for diagnosis. If a positive or suspected positive result occurs, a review at the CDC is needed to confirm the diagnosis.