"Kary Mullis, who won the Nobel Prize in Science for inventing the PCR, is thoroughly convinced that HIV is not the cause of "AIDS". With regard to the viral load tests, which attempt to use PCR for counting viruses, Mullis has stated: "Quantitative PCR is an oxymoron." PCR is intended to identify substances qualitatively, but by its very nature is unsuited for estimating numbers. Although there is a common misimpression that the viral load tests actually count the number of viruses in the blood, these tests cannot detect free, infectious viruses at all; they can only detect proteins that are believed, in some cases wrongly, to be unique to HIV. The tests can detect genetic sequences of viruses, but not viruses themselves.
What PCR does is to select a genetic sequence and then amplify it enormously. It can accomplish the equivalent of finding a needle in a haystack; it can amplify that needle into a haystack. Like an electronically amplified antenna, PCR greatly amplifies the signal, but it also greatly amplifies the noise. Since the amplification is exponential, the slightest error in measurement, the slightest contamination, can result in errors of many orders of magnitude.
To make an analogy: using the viral load tests to gauge viral activity would be like finding a few fingernail clippings; amplifying the fingernail clippings into a small mountain of fingernail clippings mixed in with other junk; and then having an "expert" come along and interpret the pile as representing a platoon of soldiers, fully armed and ready for battle.
In short, the viral load tests are a scam." John Lauritzen