The THC content of saliva, the researchers claim, is a lot more closely correlated with the levels seen in the blood, making saliva a more promising medium to test.
This drop-off wasn't as sheer in California, but many experts remain concerned over the industry's economic outlook.
Any company with lab facilities interested in supporting the testing can notify Health Canada via email.
Although they differ across state borders, all the regulations will require cannabis samples to be tested before reaching market shelves.
In these testing times, the cannabis testing sector appears to be weathering the Covid-19 storm better than most.
Pieces of cannabis legislation around the world now face significant delays due to fallout from the coronavirus pandemic.