FIFA has revealed that blood and urine samples taken from players in drug tests during the 2014 World Cup finals in Brazil will be flown to Switzerland for analysis.
Football's world governing body confirmed that the laboratory in Rio de Janeiro will not be able to regain its accreditation -- which was revoked earlier this year -- and that the samples will instead be sent to Lausanne.
The total is likely to be several hundred samples -- 576 were taken before and during the 2010 World Cup in South Africa.
The move has been prompted by the World Anti-Doping Agency's (WADA) decision to revoke the accreditation of the LADETEC laboratory in Rio de Janeiro.
Another laboratory is being purpose-built for the Rio 2016 Olympics but it will not be ready in time for next year.
A FIFA statement said: "After thorough consideration and discussion with WADA and the Brazilian authorities, FIFA has decided to use the WADA accredited laboratory in Lausanne, Switzerland, to analyse blood and urine samples on the occasion of the upcoming 2014 FIFA World Cup in Brazil.
"As WADA confirmed that following due process the LADETEC laboratory would not be able to achieve re-accreditation in time for the World Cup, FIFA has no other option but to handle the analysis of samples abroad.''
The LAD laboratory in Lausanne was used during the Confederations Cup earlier this year for handling data for the biological profiles of players.
"FIFA is now taking the necessary logistical steps for the shipment of samples overseas," the statement added.
Information from the Press Association was used in this report.