Uh ok wrote:
and that’s why people microdose and when their metabolism changes even slightly or the compound formula isn’t quite the same as before they pop a positive test
Exactly. Some screw up when they continue microdosing and test dodging, others do not, and some err on the safe side and decrease their dosages (like her likely doping colleague cough cough).
Go through the likely doping list leaked in 2017 and you easily find example for all three groups. (e.g. Kiprop - Rupp - Jager).