Each player at the Confederations Cup has blood and urine tests to create "biological passports" to aid dope testing in the future.
RIO DE JANEIRO, BRAZIL (JUNE 16, 2013) (FIFA TV) - FIFA has analysed the blood and urine samples of all players in the Confederations Cup tournament in Brazil - the first time the world soccer's governing body has established such a comprehensive database.
All eight teams taking part in the competition were tested unannounced during training and the level of the chemicals in their samples has been measured to improve doping control in future.
FIFA's chief medical officer, Professor Jiri Dvorak, says that the readings allow FIFA to establish a biological profile or passport for each player so that significant changes can be spotted quickly.
"Each person has like a genetically determined blueprint, about your hormones, about your steroids, about the blood profiling." he said. "If you start to manipulate it, it changes. So once we see that there are some alterations in the values in the long-term process then we can get suspicious that there is a manipulation of the body."
Professor Dvorak has since announced that all doping control samples taken before the tournament were negative.
The Nigerian team were tested by Professor Dvorak and his team during their training time in Germany.
The samples were sent to the WADA approved Laboratory for Doping Analyses inLausanne where the blood and urine were analysed and levels measured. A pilot project to establish biological profiling was conducted at the Club World Cup in 2011 and 2012.
"We don't look for the drug itself, look for the effects," he said. "The interesting thing is it is very fast, you can test a lot of athletes in a very short time period."
Both Neymar and Alves said that the measures were good for soccer. Their technical director Carlos Alberto Parreira said he thought the testing would safeguard the health of players and the fairness of competitions.
FIFA has already announced that the testing will be extended to all 32 teams that qualify for the World Cup finals in Brazil in 2014.