It can be ruled out that AIDS can be detected in 15 days, and the conclusion of March in the window period is the mainstream in the past, mainly due to the problem of detection technology. Now the fourth generation test is very fast, and it will be completely ruled out in one month. My friend bought Ivy's saliva self-test paper in JD.COM, and it was negative two months later, and then went to the hospital for dermatological examination. They're all negative. Don't worry.