Unfortunately DM gives no indication what the test involved in terms of following the same pharmacological
protocol as the Aus World Cup races provided. Typically the metabolite is released by the body due to extreme exercise. Was the November test done under similar conditions or simply an ad-hoc urine test?
Did they conclude contamination from something else such as food, or simply accepted the stress of the racing created the trace? Even if they assumed the rider had doped, a trace isn't an ATF because the WADA lab protocol has to find >2ng but most labs can find traces from 0.2ng upwards, because that's how sensitive the equipment is.
So the above fact that a WADA lab has to find >2ng suggests the Daily Mail article is seriously overlooking an athlete can test for a trace of the substance and not be an ATF or AAF. Therefore there is no result for UKAD to manage any differently than any other negative test result, the lab simply include the trace amount found of e.g. 0.3ng/mL and that's simply part of what ends up on ADAMS for the NGB & athlete to see anyway.
UKAD have informed BC a trace can be caused by supplement or health issues.