A Comparison of the Diminution Rates of Lead in Blood and Lead Mobilized by Caedta After Termination of Occupational Exposure: A Long-Term Observation in Two Lead Workers

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Abstract
CaEDTA 20 mg/kg was administered weekly for 3.5 years after termination of occupational exposure to two lead workers. The diminution half-lives for lead in blood and urine lead mobilized by CaEDTA were 4.8 and 3.3 years respectively for subject 1 following 28 years exposure and 3.3 and 2.0 years respectively for subject 2 following 26 years exposure. The difference in the diminution rate between lead in blood and lead mobilized by CaEDTA was significant in subject 2 (p<0.05).