How do you know that you have aids/hiv ?

Blood test: Rapid HIV antibody testing has the accuracy of rapid testing is quite high (>99 percent sensitivity and specificity). However, a positive rapid test is only preliminary and must be confirmed before a diagnosis of HIV infection can be established.

Blood test: If you have had unprotected sex with a new partner, used IV drugs with shared needles, or engaged in other high-risk activities with shared blood or body fluids, please see your doctor and get a blood test for the HIV virus. People who have never had sex or used IV drugs are very unlikely to get HIV-AIDS unless they were born to HIV-positive mothers. Don't delay if you think you might be at risk.