( CNN ) -- Days after the world of athletics was hit by serious doping allegations , the sport has been accused of covering up how it dealt with scores of suspicious blood samples . In the two years between 2006 and 2008 , the body in charge of global athletics failed to examine as many as 150 samples from several countries , according to a report broadcast by a German network Monday . This was a period before widespread changes were introduced to anti-doping procedures . The allegations reported by German TV station WDR came less than a week after German broadcaster ZDF/ARD aired an hour-long programme documenting Russia 's alleged endemic use of banned substances . As with last week 's documentary , WDR released an English transcript after airing the report . The International Association of Athletics Federations ( IAAF ) is now investigating those claims , but the governing body now finds itself under the microscope . During Monday 's edition of the `` Sport Inside , '' a former member of the IAAF 's medical commission -- who is not identified -- said the samples in question were from athletes representing Spain , Kenya , Greece , Germany , Morocco , Russia and at least one from Britain . `` Just take a look the haemoglobin values -- how they have risen in only four months by 38 % and in the next four months they have fallen again by 16 % '' , the official explains , according to the English translation of the documentary provided by the broadcaster to CNN . `` It 's obvious that there 's something wrong there . That simply can not be . It is absolutely clear to see and physiologically simply can not be explained . This can only be doping . '' President of Spain 's athletics federation Jose Maria Odriozola said his organization received no notification of any suspicious samples from the IAAF . `` When we receive information of that type , we immediately carry out surprise doping tests on the suspicious athletes , '' Odriozola said in an email sent to CNN . He also outlined that Spanish track athletes are required to supply their `` blood passport '' -- a method used to monitor any potential doping violations -- a week before competition . Both British Athletics and UK Anti-Doping have declined to comment , while both the Russian Athletics Federation and Russian Anti-Doping Agency have so far failed to reply to CNN 's request for comment . The IAAF insisted Tuesday that the English transcript of the documentary would be passed on directly to its independent ethics commission . It also said that `` a member of the IAAF Medical and Anti-Doping Commission would not know whether follow-up tests would have been conducted or not . '' The athlete biological passport program was launched in 2009 , ensuring athlete 's blood samples were stored electronically and monitored over time , according to the IAAF . Samples collected prior to 2009 , according to the IAAF , `` do not have the same level of reliability and strength as the post-2009 values which were collected under strict and stringent conditions . '' The governing body also stated that any samples taken before 2009 were only used as `` secondary evidence , '' or to arrange `` trigger '' follow-up urine tests . The IAAF also insists that `` abnormal results were duly followed-up by the IAAF , whenever possible logistically . '' WADA , the world 's anti-doping agency , said it would investigate the allegations in a statement released on Tuesday . Last week 's `` Das Erste '' documentary had already alleged systematic doping in Russian athletics . It claimed Russian officials covered up positive results in exchange for financial reward . The Russian Anti-Doping Agency ( RUSADA , ) announced it would investigate the allegations , while the president of the country 's athletics federation told Reuters the claims were `` a pack of lies . ''
Athletics hit by new scandal . German documentary makes claims over suspicious blood samples . Accusations made by former member of IAAF 's medical staff . Anonymous whistle - blowing . The blood samples were suspicious .