The mean lead (Pb) urine concentration of 240 mg/L detected in urine samples from paint factory workers was significantly higher and twice that found in nonfactory workers (110 mg/L). Human exposure to lead is common and results from the numerous uses of this metal because of its exceptional properties. The industrial use of lead is common in the manufacture of corrosion- and acid- resistant materials used in the building industry. In occupational settings, the major routes of lead exposure are inhalation and ingestion of lead-bearing dusts and fumes. Independent of the route of exposure, absorbed lead is primarily excreted in urine and feces; sweat, saliva, hair and nails, and breast milk are minor routes of excretion [30].