The different HIV self-tests vary somewhat in their application. Each test kit has detailed step-by-step instructions in the instruction leaflet.
For the autotest Exacto, first pour the buffer solution (located with the test tube) into the stand. Disinfect the finger with an alcohol swab and prick the fingertip with the lancet. The drop of blood is collected with the test tube. Put the test directly into the stand - it must click 3 times. Set the timer to 15 minutes and wait briefly until the mixture of blood & buffer solution rises and the test strip starts to turn pink. After the 15 minutes you can read the test result for 20 minutes.