JV says:
"Vaughters followed up by claiming that 100 percent of the peloton would have tested positive for EPO if tested three-to-four days before the start of the 1998 Tour."
http://velonews.competitor.com/2013/07/news/pantini-ullrich-among-1998-tour-riders-positive-for-epo_296750
My guess is somewhat less than 100%. More like 98.87%
"Vaughters followed up by claiming that 100 percent of the peloton would have tested positive for EPO if tested three-to-four days before the start of the 1998 Tour."
http://velonews.competitor.com/2013/07/news/pantini-ullrich-among-1998-tour-riders-positive-for-epo_296750
My guess is somewhat less than 100%. More like 98.87%