That is not the case. Don't make up facts about contamination.
http://www.letsrun.com/2003/lagatfull.docLots of gobbly-gook language, but here is the run down:
A and B sample collected and handled as best as circumstances can dictate. A sample frozen, B sample not. A sample tested after three days, and the B sample tested after 6 days (not frozen).
A-sample looked like recombinant epo (doping), but not quite. IT fit the pattern, but didn't line up in the right shape. This is an important piece: the EPO test is evaluated by human judgement.
Here is an example:
http://www.doping.chuv.ch/en/lad-gel-screening-epo-eng.jpgfrom
http://www.doping.chuv.ch/en/lad_home/lad-prestations-laboratoire/lad-prestations-laboratoire-liste-methodes/lad-prestations-laboratoire-liste-methodes-epo.htmIt is not a CSI lab with a computer that goes "PING" if there is EPO.
The B sample was analyzed, and only sort of matched the pattern of the A-sample, but in a different place (lower on the picture, as indicated by "negative samples").
Section B says that there was no positive for a masking agent that would have been responsible for the enzyme activity changing the A sample result to the B sample result over the 6, unfrozen days.
Finally, because I know this is important to a lot of posters, is the role of Dr. Marital Saugy, overseeing these tests. He was the man responsible for telling Lance Armstrong and Johan Bruynel how to beat the EPO test. His Lausanne lab is most recently responsible for destroying 63 Russian samples related to their state-sponsored doping cover up.