Canadian medical cannabis firm MedReleaf is launching in that country ReleafDx, a genetic test to help physicians in the prescription of cannabis. Based on a cheek swab, the test analyzes a patient's DNA and health conditions, providing information that a doctor can use to determine what cannabis product will work best for an individual, and the proper dosage. Dynacare, a Laboratory Corporation of America company, will manage the sample analysis and results reporting. The cheek swab can be done in doctors' offices or at a Dynacare Laboratory and Health Services Centre. The samples are then sent to Dynacare for analysis. Results are returned to the doctor with recommendations on the proper dosage of medReleaf's products. The test will be available in Canada starting in January.