There were no positive doping tests at this summer's Confederations Cup in Russia, FIFA said.
According to FIFA, 379 tests were carried out on players at the eight-team tournament, which finished at the start of this month. The event acts as a dress rehearsal for next year's World Cup in the same country.
"All participating players were tested through blood and urine in unannounced controls and, additionally, two players per team were tested by FIFA anti-doping officers after each of the competition's 16 matches," FIFA said in a statement.
FIFA added that the samples were analysed at laboratories accredited by the World Anti-Doping Agency (WADA), mostly at the one in Lausanne, Switzerland.
