Sodium is showing as red on my results, is this not a mineral?

Sodium is a mineral, however, the sodium as seen in your heavy metals section is sodium oxide, and not to be confused with the mineral/electrolyte, sodium. Sodium oxide is commonly found in cosmetics, personal care products, ceramics, and glasses. 

Sodium oxide can also have other names found in ingredients such as Disodium oxide, and Disodium monoxide. Please ensure you read the back of ingredient labels.