Originally Posted by eriksbliss

"Silence-Lotto's Thomas Dekker will miss the Tour de France after testing positive for the banned blood-booster EPO, his team announced on Wednesday. The sample was originally taken on December 24, of 2007, when Dekker was a member of the Rabobank team. The sample was re-tested using new techniques, which resulted in a positive test for EPO."

Assuming that the sample was sealed, frozen, and untouched for two years, are there any inherent concerns with testing a two-year-old sample? Degradation, contamination, something?