Pediatric ATI Practice Exam

What laboratory value is expected in a school-age child with iron deficiency anemia?

1. Hgb 9.0 g/dL

2. Hct 37%

3. Iron 100 mcg/dL

4. Total iron binding capacity 325 mcg/dL

The correct answer is: Hgb 9.0 g/dL

In school-age children with iron deficiency anemia, a low hemoglobin level is a hallmark indicator. A hemoglobin value of 9.0 g/dL signifies that the child's oxygen-carrying capacity is reduced, which is characteristic of anemia. Iron deficiency anemia occurs when the body lacks sufficient iron to produce adequate hemoglobin, leading to diminished red blood cell production. While hematocrit levels can also be indicative of anemia, the value mentioned (37%) is within the normal range for a school-age child and does not specifically point to iron deficiency. Similarly, the iron level of 100 mcg/dL may not reflect anemia, as it is often seen in cases where iron stores could be adequate or even excessive. Total iron binding capacity (TIBC), which is increased in iron deficiency anemia, should be higher than the stated 325 mcg/dL to indicate a deficiency. Thus, the expected laboratory finding of significantly low hemoglobin in this context aligns correctly with the diagnosis of iron deficiency anemia.