Why Is CD4 Count So Crucial In HIV Testing?
Diagnosis for HIV starts with testing blood or a sample of body fluids taken with a swab. An HIV test Australia checks for antibodies that the body may have released against the virus. These antibodies can be found in the blood, urine, breast milk, semen, vaginal fluid, saliva, and rectal fluid.
The Meaning and Importance of CD4 Count
The CD4 cells are specialized white blood cells that HIV targets and kills. A CD4 count can tell how many of them are remaining in your blood. So, a higher number means you have stronger immunity. An uninfected adult can have a CD4 count of about 500-1600 cells/mm3. If the HIV test detects a figure less than 200 cells/mm3, you will have contracted AIDs, the third and most advanced stage of the virus.
The CD4 count indicates your susceptibility to opportunistic diseases since it measures the level of your immune system. Anyone with HIV should take antiretroviral therapy regardless of their CD4 count. But anything below 200 cells/mm3 should raise the urgency to start ART.