The Globe and Mail reports in its Tuesday edition that legal cannabis may not be as strong as the vendors say it is. The Globe's Irene Galea and Jameson Berkow write that cannabis producers and testing laboratories say that many labels on legal dried cannabis misrepresent the amount of THC and CBD actually contained in the dried flower, and often overstate both. Studies by two labs show that some samples had 20 per cent less THC than the amount specified. "There are cannabis companies in the top 10 that are absolutely inflating their flower values," said Borna Zlamalik at Moncton-based Organigram. Producers and laboratories say this undermines part of the point of legalization -- to create trust and confidence among consumers -- and could lead to negative health outcomes for users. Some critics attribute the disparities to a lack of standardized testing methods and government oversight, saying producers are cherry-picking and processing samples in ways that are not representative of entire batches of pot and the THC contained in the end product. Others allege that some cannabis testing firms use fraudulent techniques to produce inflated THC results. Health Canada is reviewing complaints about inaccurate labels.