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Occurrence and detection of iron-deficiency anemia in infants and toddlers
1Department of Clinical Laboratory Science, College of Allied Health Sciences, East Carolina University, Greenville, NC 27858-4353, USA. bambergw@ecu.edu
Insights
Iron deficiency in infants and toddlers can harm neurodevelopment. Reticulocyte hemoglobin content assays offer earlier detection than traditional hemoglobin tests, aiding timely intervention for at-risk children.
Area of Science:
- Pediatrics
- Nutritional Science
- Hematology
Background:
- Infants and toddlers are highly susceptible to iron deficiency, potentially causing irreversible neurodevelopmental deficits.
- Risk factors include prematurity, low birth weight, early cow's milk consumption, and excessive toddler cow's milk intake.
- Early detection of iron deficiency is crucial to prevent severe consequences like anemia.
Purpose of the Study:
- To provide an overview of iron deficiency and iron deficiency anemia in young children.
- To discuss the epidemiology, occurrence, and detection methods for iron deficiency in this age group.
- To compare the effectiveness of various laboratory tests for identifying iron deficiency.
Main Methods:
- Review of epidemiological data on iron deficiency in infants and toddlers.
- Analysis of laboratory testing methodologies for iron deficiency screening.
- Comparison of reticulocyte hemoglobin content assay with traditional hemoglobin/hematocrit tests.
Main Results:
- Hemoglobin and hematocrit levels may not decrease until iron deficiency has progressed to frank anemia.
- Reticulocyte hemoglobin content assay has emerged as a more sensitive early indicator of iron deficiency.
- Identifying at-risk populations is key for targeted screening and intervention.
Conclusions:
- Early detection of iron deficiency in infants and toddlers is vital for preventing long-term neurodevelopmental issues.
- Reticulocyte hemoglobin content testing offers a significant advantage for early diagnosis over traditional screening methods.
- Implementing appropriate laboratory screening can mitigate the risks associated with iron deficiency in early childhood.
Abstract:
Infants and toddlers are particularly vulnerable to developing iron deficiency, which can cause irreversible deficits in neurodevelopment. Children at highest risk include premature and low birth weight infants, those who are fed cow's milk rather than breast milk or formula prior to age one, and those who drink large amounts of cow's milk as toddlers. It is important to detect iron deficiency before it becomes frank anemia through the use of appropriate laboratory tests. Hemoglobin or hematocrit testing, at around age one, has been the usual screening test. These tests, however, do not become abnormally low until frank anemia has developed. Over the past decade, research has shown the assay for reticulocyte hemoglobin content to be a much earlier indicator of iron deficiency. This article provides an overview of the epidemiology, occurrence, and detection of iron deficiency and iron deficiency anemia in young children as well as a comparison of the utility of various laboratory tests.
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