The first graphic shows the type of laboratory tests that are used in diagnosing the STDs


In the next two pages, there is a graphic depiction of the principle of culturing the infected area using a culture swab. First, the material is placed onto the swab...



Then the swab is placed in culture medium where the microbes are grown



Similarly, the principle of the blood testing is explained graphically. If you one is infected with HIV or syphilis, a blood test for antibodies will be positive.



However, there is a time delay of up to 3 months, shown graphically here (excuse the poor scanner reproduction).