A negative 80-day test on HIV test strips can usually be ruled out. The window period of HIV is generally 2-6 weeks, usually start counting time with the date of the occurrence of high-risk, 2 weeks after the test, but because of the window period, the longer the data measured the more accurate, generally the accuracy of the high-risk date of 2, 4, 5, 6 weeks after the gradual increase in accuracy, generally in 6 weeks when the test results of the accuracy of the high, basically can be diagnosed at 6 weeks. Therefore, a negative 80-day test for HIV test strips can basically be ruled out. HIV testing is mainly saliva test paper test, blood test paper test. It is recommended that it is best to test in two different ways to improve accuracy.