Iron Deficiency – Diagnosis and Management

This guideline provides recommendations for the diagnosis, investigation and management of iron deficiency in patients of all ages.

Key Recommendations

Definitions

Iron deficiency: insufficient total body iron stores, caused by increased requirements, decreased intake, increased loss, and/or decreased absorption 1 (see Table 1).

Anemia: low hemoglobin level, most frequently defined as a hemoglobin value over two standard deviations below the gender- and age-adjusted mean. 1 A hemoglobin value below the local, lab-specific lower reference interval indicates anemia.

Iron deficiency anemia (IDA): anemia due to insufficient body iron stores 1 . The following laboratory findings are typical for IDA: microcytic anemia, hypochromia, and decreased ferritin. IDA may be normocytic if anemia is mild or in early iron deficiency. 2

Identification of Patients at Risk for Iron Deficiency and Iron Deficiency Anemia

Screening of the general population for iron deficiency is not recommended. 3 Use a case-finding approach to identify patients at risk of iron deficiency and iron deficiency anemia (Table 1).

Common risk profiles, by age, include:

Table 1: Common causes of and risk factors for iron deficiency and IDA in adults

Note: Please refer to Iron Deficiency in Children and Iron Deficiency in Obstetrics for causes and risk factors in children, pregnancy and the perinatal period.