Tygart on Armstrong:
'Tygart said Armstrong had been tipped off by Swiss drug testing laboratory director Martial Saugy about how to beat the erythropoietin (EPO) test in 2002 after one of Armstrong's samples from the 2001 Tour of Switzerland was described as "suspicious."
"Saugy sat down next to me and said, 'Travis, in fact, there were samples from Lance Armstrong that indicated EPO use'," Tygart told CBS television's 60 Minutes Sports.
"As far as we are aware, (it is) totally inappropriate to bring in an athlete who had a suspicious test and explain to them how the test works."
The Swiss lab chief also told Tygart that the International Cycling Union (UCI) had asked him to hold an unprecedented meeting with Armstrong and his former manager Johan Bruyneel to explain the EPO testing process.
Tygart said six of Armstrong's samples taken during his first Tour de France win in 1999 eventually tested positive.
The samples were originally reported as negative but they were re-tested in 2005.
"All six were flaming positive," Tygart said.'