There will be soon I suspect.
Although the 5 nanagram per se limit has yet to be implemented into law in Colorado, the police and prosecutors are already arguing that 5 nanograms of active THC is the per se level and will try to bring in their state “expert” to testify that 5 nanograms means you are unable to safely operate a motor vehicle.
http://www.petersandnolan.com/driving-under-the-influence-of-marijuana-duid.html
Interesting, thanks.
5 ng is an absolute value and these things are usually done as concentrations. So maybe this is 5 ng/ml?
Yes, I looked at your link and it is 5 ng/ml.