One can be sure of being HIV free only when one has taken a test. The test is conducted to see any HIV traces in the blood sample. A blood sample is taken from your arm and sent for testing. HIV can also be tested from you’re the urine sample or saliva or other fluids.However before taking any HIV test one must make sure to ask the privacy rules that the clinic follows. One must also be confident and prepared if the result is positive and must be able to deal with the situation. One must also ask the concerned doctor any queries about HIV, AIDS, survival rates, early detection, and related risks.In people who are not infected by the HIV virus, the CD4 count in normal circumstance is above 500 cells per cubic millimeter. People infected with the virus stand at risk when the CD4 count in the blood becomes less than 200 per cubic millimeter. It is then that the person is called immunosupressed.