"Zinc levels" refers to the amount of zinc present in the body, which is an essential mineral commonly found in foods. It indicates how much zinc a person has, which is important for various bodily functions and overall health. Full definition
Some research suggests that children with ADHD have lower zinc levels in their blood than children without ADHD. (webmd.com)
However, having serum zinc levels checked when other diagnostic avenues have been exhausted may not be unreasonable, at least until such time as the relationship is better defined. (hari.ca)
Analysis of zinc levels in the plasma and in the red blood cells, in the urine and the hair, showed the patient to be very zinc deficient. (westonaprice.org)