The parents of a 4-year-old girl have sought care because their daughter has admitted to chewing and swallowing imported toy figurines that have been determined to be made of lead. Which of the following blood tests should the care team prioritize?
A) White blood cell levels with differential
B) Red blood cell levels and morphology
C) Urea and creatinine levels
D) Liver function panel
Ans: B
Feedback:
Anemia is a cardinal sign of lead toxicity. Consequently, assessment of the quantity and morphology of RBCs is paramount in cases of suspected lead toxicity. White blood cell and liver studies are not central to the care of this client. Lead is indeed nephrotoxic, and urea and creatinine levels are relevant to assessment, but the priority blood test is assessment of the RBCs.
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