RIO DE JANEIRO -- All 800 players who have given samples in the World Cup doping program have tested clean, FIFA said on Tuesday.
FIFA also said players chosen for samples after the first nine matches -- including the Switzerland-Ecuador early kickoff on Sunday -- tested negative.
The figures include samples from 91 percent of players included in the 30-man preliminary squads for the 32 teams.
FIFA reported no problems getting blood and urine samples to the World Anti-Doping Agency laboratory in Switzerland.
FIFA's chief medical officer Jiri Dvorak says "all worked well including the transport from Manaus." Italy played England in the remote Amazon jungle city on Saturday.
Dvorak says in a statement "all samples arrived under 36 hours in Lausanne and were processed within 24 hours."
WADA revoked the Rio de Janeiro lab's accreditation last year.