Several points bear highlighting.
These kind of variations do not necessarily mean that there has been any change in the status of the virus or change in the potency of the treatment. If one applies this standard to your viral load response, changes from 1 million to 800,000 or from 800,000 to 3 million do not really represent significant changes. One could really postulate if you've had a response to the current therapy. With that said, it is important too to evaluate your CD4 absolute cell count and percentage as a function of this therapy. Lastly, T-20, like other HIV therapies is prone to the development of resistant virus when given in monotherapy.