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What Does Cd4 Cell Mean

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AIDS InfoNet

CD4 (T-Cell) Tests

What Are CD4 Cells? CD4 cells are a type of lymphocyte (white blood cell). They are an important part of the immune system. CD4 cells are sometimes called T-cells. There are two main types of CD4 cells. T-4 cells , also called CD4+, are "helper" cells. They lead the attack against infections. T-8 cells (CD8+) are "suppressor" cells that end the immune response. CD8 cells can also be "killer" cells that kill cancer cells and cells infected...
Ask the Experts

T-cell (cd4) 40.1% means what?

Dear Dr,I just took a T-cell(cd4) count test. The result is 40.1%.I don't understand what this mean. I know that, the normalT-cell count should between 500 to 1,500 per cubic millimeter. could you tell me that my result (40.1%) means how much...
Mark Holodniy, M.D., F.A.C.P., C.I.C.

Response from Mark Holodniy, M.D., F.A.C.P., C.I.C.

Stanford University, School of Medicine
40% represents a normal percentage of CD4 cells. In other words, 40% of the lymphocytes counted are CD4 lymphocytes, and 60% are other kinds of lymphocytes like CD8 cells.MH... Read more »

Difference between CD4 and Percentage (CD4 count versus CD4%, 2011) (LACK OF CD4 RESPONSE DESPITE TREATMENT, 2011)

Could someone explain what exactly is the correlation between CD4 cells and percentage. I know what CD4 are but what does percentage mean. Also, I have been undetectable for 1 year now, my percentage has gone from 3 to 8 but cd4 rose to 320 from 130...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
Hi.This gets a bit confusing, but let me try to sort this out for you. A CD4 count is not a direct cell count of CD4 cells in your blood. Rather, it's a calculation based on the total white blood cell count and the proportion of those white... Read more »

CD4 counts vs CD4 percentage (ABSOLUTE CD4 COUNT VERSUS CD4%, 2008)

Dr. Frascino, I am a little new to dealing with HIV. I was diagnosed about 9 months ago. I was wondering what the CD4 percentage was. Because my CD4 count had changed from 510 to 409 in a three month period but the CD4 percentage had risen by 1%....
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
Hey College Guy,I'll reprint below some information about absolute CD4 cell counts and CD4%. The CD4% is the more accurate test, as it is less susceptible to variations related to concurrent phenomena (diurnal variation, other infections, etc.)... Read more »

Absolute CD4 count down while CD4% up. (ABSOLUTE CD4 COUNT VERSUS CD4%)

Hello Dr. Bob,You are wonderful and doing very important job :) . I have never seen such a Doctor who has an excellent sense of humor and plays the piano. Btw, I play the cello :) . Now my question. My time of infection is between 2006 02 and 2006...
Robert J. Frascino, M.D.

Response from Robert J. Frascino, M.D.

The Robert James Frascino AIDS Foundation
Hello Cello-Guy,I strongly disagree with the advice your doctor gave you regarding absolute CD4 counts versus CD4%! I reviewed this topic in detail recently in this forum. Consequently, rather than retyping the same information, I will instead... Read more »
Connect With Others

Do anybody know about CD4 cells count?

Posted by Anonymous, 1 Reply
Hi guys,

I have a question about my tests - in fear of HIV infection because of a bad incident and symptoms not long after, I went to have my blood tested for HIV as well as other infections - the PCR and antibody test both turned out Negative, but... Read more »

Use of cd4/cd8

Posted by Anonymous
Hi,
dropping by this bulletin-board, I see there is a lot of use and abuse of t-cell subsets among worried wells. To put things in perspective - cd4/cd8-ratios were used as a surrogate marker of HIV-infection among blood donors at a US hospital... Read more »

To Jackie Blue - Re CD4 depletion

Posted by Anonymous, 2 Replies
Dear Jackie - thanks for replying to my post. I wanted to respond so I could answer some of your questions.

Firstly - how do I know it is not cancer - I don't - all i know is that exactly 20 days after an unprotected sexual exposure I came down with... Read more »

HELP !! CD4 170 AIDS DIAGNOSIS-- IS THIS THE END?

Posted by Anonymous, 7 Replies
I have been positive and healthy on no meds for the last 8 years. Now my cd4 count which was about 600 is down to 170 and my once undetectable viral load is now detectable. What's the average timeframe a person survives after an AIDS diagnosis ? I... Read more »