Comparison of iron deficiency classifications.

<p>For patients presenting between 2006 and 2010, iron deficiency was assigned as absent (No ID) if ferritin, iron and T<i>f</i>SI were all clearly in the normal range (ferritin>20 µg/L, serum iron>11 µmol/L and T<i>f</i>SI>20%, N = 93). The groupings to examine iron deficiency were ferritin <15 µg/L (ferr<15, N = 20); ferritin <20 µg/L (ferr<20, N = 26); and serum iron <11 µmol/L (iron <11, N = 50). BMI, body mass index. MCV, mean corpuscular volume. MCH, mean corpuscular haemoglobin. MCHC, mean corpuscular haemoglobin concentration. T<i>f</i>SI, transferrin saturation index.