Kenyan athletes subjected to blood tests following German television documentary claims However, the IAAF said it had succeeded in testing the samples within the time frame after taking blood from athletes in the Rift Valley town of Eldoret a fortnight ago. The samples were flown to Nairobi and then on to Switzerland, where they were taken to a laboratory in Lausanne. Any spikes or abnormalities in the profile may be evidence of a doping violation, though the results will not be known for at least another two months. An IAAF insider said the athletes tested included "most of the big names" and that the operation was carried out with the full support of Athletics Kenya. "In the beginning it was hard to convince them, but we managed it," said the insider. "We told them, "If you're clean you don't need to worry, so let's prove to the world that everything is OK.""