| what does CD4 stand ?
Nov 5, 2006
What does CD4 stand for and why is it important to have a CD4 count above 200?
Response from Dr. Daar
When people refer to "CD4" they are usually talking about the lymphocytes, a type of immune blood cell in the body, that are infected by HIV and decline during the course of infection by this virus. The number of CD4 lymphocytes in the body provides information regarding the stage of disease and what complications of HIV infection one is at risk for. In general, most people are not at risk for complications of HIV until their CD4 cells decline to below 200 cells/uL. It is important to note that there are no absolutes as some will develop complications with numbers greater than 200 cells/uL. It is equally important to note that many will go months or years with CD4 cells less than 200 before they develop any complications.
I hope this answers your question. Best, Eric
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