The presence of salbutamol in urine in ex cess of 1000 ng/mL is presumed not to be an intended therapeutic use of the substance and will be considered as an Adverse Analytical Finding  unless the Athlete proves, through a controlled pharmacokinetic study, that the abnormal result was the cons equence of the use of a therapeutic dose (maximum 1600 micrograms over 24 hours) of inhaled salbutamol.