Non negative is a tentative cover-story label for commercial purposes----that is, until the sponsors and event promoter are advised on how best to proceed.cyclingheroes said:Normally (but what's normal these days..) a non-negative is either because it's unknown if substance in a probe is artificial or not or the athlete has a medical certificate but the measure of the substance is too high.
non negative = positive, but expected to be voided by the underwriters!
Definitions of fraud are fun.
eg: money laundering does not mean that a washing machine is useful