Lead poisoning : What are the most effective tests?

In a child presenting with symptoms of lead poisoning, what are the most effective diagnostic tests and treatment strategies to reduce blood lead levels and prevent long-term complications, and what further investigations and follow-up care are necessary to ensure optimal outcomes?

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diagnostic tests:

  • blood lead levels
  • CBC with peripheral smear
  • LFT and RFT

treatment strategies

  • remove lead source
  • chelation therapy
  • supportive care


Laboratory tests for lead poisoning:

  • Complete blood count and peripheral smear. (Hypochromia and basophilic stippling are strongly suggestive of lead poisoning)
  • Blood lead levels (BL) by spectroscopic methods.
  • Urine analysis to identify ALA(aminolaevulinic acid) concentration, which serves as a sensitive indicator of lead poisoning.
  • X-ray fluorescence technique
  • It has been suggested that all children must be screened for the blood lead levels & an therapeutic indication is indicated for conc of >20mcg/100ml.
    Calcium disodium EDTA mobilization test is also done mainly in children.

TREATEMENT:

  • Eliminating poison sources from the body
  • Chelation therapy
  • Ventilatory support
  • Fluid therapy