In general, blood tests cannot detect AIDS because several items of blood tests mainly check the blood cells, including white blood cells, red blood cells and various lymphocytes, in addition to C-reactive protein and so on. However, there is no relationship between any of these components and whether or not a person has AIDS, so this test cannot detect whether or not a patient has AIDS. If you test whether a patient is infected with HIV, you must perform an HIV antibody test, in the clinical if the test program, usually called HIV antibody test, if the test is positive that the patient has been infected with HIV, if it is negative that there is no infection, this test is the gold standard to determine whether HIV infection or not.