Most tested cyclist in history? Well, heavy testing did not come start until around the year 2000. Typical testing rules called for testing stage winners, and testing the guy in the yellow jersey. Plus, the out-of-season "surprise" tests. Given how many days Lance was either a stage winner, or wearing the yellow jersey, it is likely he was the most tested rider in the Tour de France after the year 2000.
A company that owed him a million bucks refused to pay him on the basis of a drug violation clause in their contract with Lance. He sued them and both sides were able to present ALL of the available evidence as to whether Lance won "clean" or not. The company ended up paying Lance WAAAY more than the original million dollars...the evidence he was "clean" far exceeds any evidence that he was "dirty".