The World Anti-Doping Agency is planning a special visit to Jamaica next year following concerns over the Caribbean island's anti-doping programmes.
The visit follows comments by former Jamaican Anti-Doping Commission boss Renee Anne Shirley that there had been a significant gap in out-of competition testing by JADCO in the months prior to the 2012 London Olympics, where Jamaican sprinters were dominant.
Former world 100 metres record holder Asafa Powell, two-time 200 metres Olympic champion Veronica Campbell-Brown and London sprint relay silver medallist Sherone Simpson have all tested positive for banned substances recently.
WADA had hoped to make the inspection this year but the agency says they were unhappy to learn that JADCO couldn't accommodate the visit until 2014.
The IAAF says it's not concerned about the WADA visit or the testing of Jamaican athletes, including six times Olympic champion and double sprint world record holder Usain Bolt who has never failed a doping test.