You are reviewing the Complete Blood Count for a 3-year-old who has been diagnosed with idiopathic thrombocytopenia purpura. Which information should you report immediately to the health care provider?

Choice A rationale An increased eosinophil level, or eosinophilia, often indicates an allergic response or a parasitic infection, which is a significant finding but not immediately life-threatening. While needing further investigation, it does not represent an acute physiological crisis that demands emergent reporting, unlike critical oxygen-carrying capacity impairment. The normal range for eosinophils is typically 1 to 4 percent of the total white blood cell count. Choice B rationale A hemoglobin level of 6.1 grams per deciliter is severely low, far below the normal range for a child (approximately 11 to 14 g/dL), indicating significant anemia. This critically impairs the blood's oxygen-carrying capacity, risking tissue hypoxia, cardiac strain, and potential shock, requiring immediate intervention such as a blood transfusion. Choice C rationale A platelet count of 40,000 per cubic millimeter is low, consistent with the diagnosis of idiopathic thrombocytopenia purpura, which is defined by a count below 150,000. While this count increases the risk of bleeding and requires close monitoring, it is an expected part of the diagnosis and is not immediately as life-threatening as severe anemia unless active major bleeding is occurring. Choice D rationale An elevated reticulocyte count, or reticulocytosis, indicates increased production of immature red blood cells by the bone marrow, typically a compensatory response to anemia or hemorrhage. This finding suggests the body is actively trying to correct the low hemoglobin, which is a positive sign and not an immediate emergency requiring urgent reporting.