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Urinary Coproporphyrin Isomers I and III in Lead Workers and a Control Group
  1. Shawkia Mehani
  1. Department of Forensic Medicine, Faculty of Medicine, Ain Shams University, Abbassia, Cairo, U.A.R.

    Abstract

    The excretory pattern of coproporphyrin I and III isomers has been studied in urine from nine health subjects and 10 lead-exposed workers with no clinical evidence of lead poisoning.

    In normal urine it was found that coproporphyrin I exceeded coproporphyrin III, whereas in lead workers coproporphyrin III predominated, although this was accompanied by an increase in the absolute amount of coproporphyrin I, indicating active haemopoiesis in lead absorption.

    https://doi.org/10.1136/oem.23.2.112

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