In reply to Timmd: Not new at all. The problem for testers is it is metabolised by the body(apologies if this is the wrong term) within in a few days so will no longer be detected.
The opinion with Contador was he doped following the Dauphine'. Wait a few days for the clen to be clear from his system then remove a quantity of blood to bank for the TdF. It is even possible they had the banked blood tested and found it to be clear. The problem was the in race test was sent to a German lab the had far more sensitive testing the virtually any other the UCI/WADA etc use!
Plasticisers in the concentrations found in is sample are apparently indicative of IV transfusion. As only the race doctor can administer/sanction IV fluid during the race, and this was not the case, then how did they come to be there following the rest day but not before????
The Spanish PM et al jumping to his defence, and the overturned 1yr ban are a farce.