Testing is one of the most important part of the growing industry. Potency, unknown toxins or residual contaminants must all be identified to protect the industry. States are establishing boards to ensure future mandatory labeling, testing requirements will become state law. Federal law prohibits this testing, at this time. So it is the responsibility on a state level.
Quality Control ‑ The legal aspect of quality assurance is the key to the cannabis industry supply chain. Ongoing testing for THC levels, residual solvents (Oil Extraction), heavy metals, molds and pesticides. Currently 11 states plus Canada have testing requirements.
Testing ‑ Cultivators are required in Colorado to test every six months who sell to a retail establishment. However Colorado does not allow consumers to test their product from their personal grows. CannLabs president Genifer Murray says there is not work to go around to all the labs that have been granted licenses in Colorado.
The testing cost vary from cannabis products, experiences, materials, labor and the products themselves. Testing edibles become harder to test since they have different matrices. The large product range of cookies, brownies, hard candy etc.
Testing Methods ‑ Liquid Chromatography (LC), Liquid Chromatograhy/Mass Spectometry (GC/MS) or Thin Layer Chromatography (TLC) are the preferred methods. One company has a infrared spectrascope to test in each dispensary by paying a monthly fee. As with the growth of the cannabis industry, regulations will tighten and become mandatory in most states. Las Vegas, Nevada currently has mandatory lab testing for all dispensaries in force.