Nov 7 2005
Or more accurately, “non-negative”, though if it’s not negative, there’s really only one thing it could be. According to Cyclingnews, the non-negative A sample came from Stage 20, in which Heras rode a blistering TT, coming in second and expanding his lead over Denis Menchov. He could, of course, still be exonerated by a clean B sample.
For you optimists out there, it’s important to note that the EPO must have been taken no more than 3-4 days (scroll down) before the positive sample, and would not have taken effect for 2-3 weeks (updated link 12/14 | scroll down) after it was first injected, meaning that Heras’ season would have been over before its effects were felt.