Swimming’s governing body Fina is to retest blood samples taken from swimmers at last year’s Rome world championships for evidence of doping.
It is looking for traces of “plasticisers” – particles of plastic left over from blood bags.
Fina took the decision at a meeting in Bangkok following the 391 blood samples taken from the July and August meeting, though none of these were positive.
There were also 162 samples screened for the blood-boosting hormone EPO at the same event.
The governing body is contemplating storing blood samples for eight years after competition and using ‘biological passports’ to monitor swimmers’ blood profiles for evidence of doping. This has recently been introduced by cycling’s governing body.