FIFA will introduce biological passports to combat doping in football . Biological profiles are built up by collating an athlete 's drug test results over time , therefore making it easier to detect differences which could indicate the use of a banned substance . Global sport has been rocked by several recent sports scandals . World Anti - Drug Agency calls for world sports to introduce biological passports . DNA samples taken from 114 of the 820 qualifying matches for Brazil 2010 World Cup .
FIFA will introduce biological passports to combat doping in football . Global sport has been rocked by several recent sports scandals . World Anti - Drug Agency calls for world sports to introduce biological passports . DNA samples taken from 114 of the 820 qualifying matches for Brazil 2010 World Cup .