You cannot determine a deficiency or excessive amount of micronutrients without blood or urine tests (hair tests are useful for heavy metals but not much else). So if you suspect someone has elevated copper or lead levels, or low Selenium or chromium levels you need to refer to a physician who can order the appropriate tests. While you can get tests done on-line w/o a prescription, they are expensive and are not covered by insurance. Herbs can occasionally be useful for some of these issues, example ground Ivy for elevated lead or seaweed for low iodine levels, in most cases supplements like Zinc are used because it is an antagonist to copper.