The British Olympic Assosciation have asked Phillips Idowu to provide his medical records as he struggles with fitness ahead of the Olympics.
The 33-year-old recently pulled out of a meet at Crystal Palace, citing a recurring hip injury.
Idowu, who did not attend the British team's training camp in Portugal, has also withdrawn from events in Oslo and Paris, hampering his preparations ahead of this summer's Games in London.
With the Games now just a matter of days away, BOA spokesman Darryl Seibel has contacted the triple jumper's camp in order to obtain further details on his injury.
"We have written to Phillips and his agents asking that he provides the relevant material relating to his injury and the treatment he is currently receiving to our chief medical adviser, Dr Ian McCurdie," Seibel told the Daily Mail.
Idowu claimed the silver medal in Beijing four years ago.
