The defendant applied for a directed verdict of acquittal on two counts of operating a conveyance with THC in his blood exceeding 5.0 ng/mL, contrary to s. 320.14(1)(c) of the Criminal Code.
The Crown conceded no liability for impairment but argued sufficient evidence for the THC concentration.
The court, applying the test for a directed verdict and considering the expert toxicologist's evidence regarding measurement uncertainty (specifically, the +/- 0.4 ng/mL margin of uncertainty on the 5.2 ng/mL reading), found that the Crown failed to negate the reasonable inference that the THC level could have been below 5.0 ng/mL.
Consequently, the evidence was insufficient to support a conviction beyond a reasonable doubt, and the motion for a directed verdict was granted, dismissing counts 1 and 3.