HIV test strips are also known as AIDS test strips. Steps to Abbott HIV test strips as an example, first, before testing must wash hands, clean work, use alcohol or household hand sanitizer to clean hands. The second step is to open the packaging of aluminum foil, take out the test paper on the desktop, in accordance with the gap to tear the protective film, visible complete test strip will test paper flat, you can see that refers to be divided into three areas, respectively, the blood-added area, the control area, the detection area. The blood-added area is the place where the sample is dropped to cultivate blood. The control area is the control line, that is, the location where the negative appears. The detection area is the location where the positive appears. Blood collection is delicate. First of all, you should use alcohol or alcohol cotton balls, and then twist the disposable blood collection needle to protect the round cap, and then pierce the surface of the skin, gently squeeze the bleeding. Generally use the ring finger of the left hand, and to note that a blood collection needle can only be used by one person, otherwise it will cause cross infection. After the blood collection, then use a sterile cotton ball to lightly press the blood collection site to stop bleeding, so that after the drop of blood, drop to the sample to add two drops of blood later, and then add a drop of buffer two seconds after adding the blood sample to prevent blood clotting. After the blood sample and buffer solution is added you can see the reaction of diffusion, will slowly flow through the observation area. Generally after five minutes, the mixture will have flowed to the observation area, which is the detection area and the control area. The results should be judged carefully. After 30 minutes the test line, which is also the negative and positive line, will be clearly fixed, one red line is negative and two red lines are positive.