Originally Posted by
Wheeze
The sports scientist who provided the data to WADA on salbutamol levels in urine has come 'clean' and admitted his error.
Simply put, the analysis of human urine salbutamol levels relative to inhaled dose was performed on one class of sportspeople attracting great interest at the time....swimmers.
Urine samples were obtained after training when a known inhaled dose had been taken to correlate the amount in urine that is expected so that 'overdosing' cold be detected. Of course, after 5 hours of hard swimming, the urine was pretty voluminous and dilute.
This does not equate to the urine of a cyclist after 5 hours of hard cycling when the urine will be concentrated and therefore, comparing volume for volume, will contain increased proportions of excreted substances. This explains the 'high' levels of salbutamol in Froomes urine. It was just highly concentrated.
The base data was wrong. Therefore no case.