With the delay spray six months after the examination of AIDS disease antibody negative can rule out AIDS. The essence of the delay spray is a local anesthetic, the composition is mainly benzocaine, can play a local role in reducing the sensitivity, so as to prolong the time of sex, and the AIDS test is mainly a blood test for AIDS antibodies, and the use of delay spray has nothing to do. The window period of AIDS is usually 2 to 6 weeks, so six months after the blood test for AIDS-related antibodies, if the test is negative, you can basically exclude the AIDS infection. The use of time-lapse sprays need to consult a doctor in detail, clear indications and contraindications, after the use of the drug discomfort in a timely manner to consult a doctor; check AIDS need to be carried out in a professional hospital or CDC.