Confusing/Variable test results(10/14/09)-Follow-Up
Oct 15, 2009
Thanks so much for your response. I do know that the CD% is the more stable reading vs. the absolute CD4 count. Any explanation (that I might understand, anyway) for why it would change by 25% (37% vs 27%) in just 6-7 weeks between tests?
Response from Dr. McGowan
The drop is more steep than would be expected with your relatively low viral load. It is probably a combination of normal variability in labs and actual decline due to HIV infection. Think of a wavy curve that has a high point and a low point but fluctuates around a straight line that may be slowly sloping downward..if the first measurement is at the high point and the next happens to be at the low point of the curve the difference may exaggerate the slow steady decline.
Hope this helps. One good thing is that once medication is started and the virus is suppressed, the CD4 count from this level will usually rise nicely.
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