A nurse is reviewing the laboratory report of a preschooler during a well-child visit. Which of the following laboratory results should the nurse report to the provider?

Choice A reason: A sodium level of 140 mEq/L is within the normal range. Choice B reason: An iron level of 100 mcg/dL is within the normal range. Choice C reason: A calcium level of 9 mg/dL is within the normal range. Choice D reason: Correct. A hemoglobin level of 8 g/dL is lower than the normal range for a preschooler and should be reported to the provider for further evaluation. This may indicate anemia, which requires assessment and potential intervention.