The French anti-doping agency is controlling drug testing at this year's Tour. The Italian committee oversees doping in Italy and indicated that Sunday's tests were part of a pre-race agreement with the French authorities.
Spanish riders Moises Duenas Nevado and Manuel Beltran have been ejected for doping. Italy's Riccardo Ricco won two stages before he was removed for testing positive for the blood booster EPO.
Schleck took the overall lead Sunday from Cadel Evans during the stage that crossed into Italy. The teams remained in Italy for a rest day Monday before the 16th stage brings the race back to France on Tuesday.
