I know there's another one later that will be interesting to compare to this one, but my concern is this one is including specifically sweat but no other bodily substances. We'd be including that, but not the whole gamut of bodily substances like it does in a later one.
The drugs and driving committee basically said that, in relation to drug-impaired driving, they don't recommend sweat for use in analysis, and my understanding was that it doesn't have the ability to necessarily detect the current state of somebody's impairment. Right now, the scientific data doesn't seem to support the ability to use sweat for that purpose, so I'd be concerned that if inserted here, it would not have the scientific backing to make it appropriate for addition. I'll certainly keep an open mind on the later one, which includes sweat in a different way.