C is a product. It is sold in store only, at Full Spectrum Naturals in CoolSprings Crossing, Cool Springs (1735 Galleria Blvd, Suite 1047, Franklin, TN). Call (615) 663-7865 to check it is on the shelf.
A certificate of analysis (COA) is a laboratory's report on a product: how much of each cannabinoid it contains, and the results of tests for heavy metals, pesticides, residual solvents and microbials. Tennessee requires hemp-derived products to carry a QR code on the label linking to that report.