Abstract: The hazards of exposure to heavy metal contamination, examples of which arsenic, beryllium, lead, cadmium, chromium, nickel, zinc, mercury and barium, and the radioactive substances which deposit in human bone, examples of which are uranium, plutonium, and americium, are very serious and are well known to scientific and medical professionals. Since lead is a prevalent metal contaminant which deposits in human bone, and its effects are quite hazardous, especially to young children, the focus of this disclosure will be on methods of detecting lead exposure. While it is possible to detect the level of lead in the body through the use of a blood test, the relevancy of such tests is limited, since the risk to humans from lead exposure is related to the amount of lead deposited in the bones of the exposed person and not, necessarily, the amount in the blood.