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. Author manuscript; available in PMC: 2016 Jun 1.
Published in final edited form as: Clin Nutr ESPEN. 2015 Jun 1;10(3):e118–e123. doi: 10.1016/j.clnesp.2015.03.001

Table 1.

Thresholds for laboratory tests of iron status indicative of iron deficiency in the ferritin model

Abnormal values
Age Serum ferritin
(ug/L)		 Transferrin
saturation (%)		 Erythrocyte protoporphyrin
(ug/dL of red blood cells)
12–15 years-old <16.5 <14% >70
≥16–21 years-old <16.5 <15% >70