Interesting read, maybe, just maybe, the test itself is not valid, (15.4% of virtual subjects given a false positive).

Futility of current urine salbutamol doping control.

And if so, this leaves WADA and clean sport in general in a world of pain.

It means that there have been, and will continue to be, both false positives and false negatives.

May I just add a lot of posts still say the result was double the limit.


The limits given by WADA are 1000 ng/mL with the decision limit, taking into account measurement uncertainty, is 1200 ng/mL.

After taking into account urine concentration Froome's result was 1429, so 19% over decision limit. It's still 19% but not double.

And another interesting read.

The Times