A useful screening test for lead is measurement of which of the following?
Coproporphyrin in urine
Amino laevelunic acid in urine
Basophil in urine
Lead in morning urine sample
Coproporphyrin in urine: Useful screening test. <150ug/L in non exposed persons. Amino laevulinic acid in urine: indicates lead absorption if > 5mg/L Lead level in urine: if >0.8 mg/L indicates lead exposure and absorption Basophillic stippling of RBC : sensitive parameter of hematological response Ref: Park's textbook of Preventive and Social Medicine, 21st Edition, Page-749