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Table 1

From: The Abnormal Measures of Iron Homeostasis in Pediatric Obesity Are Associated with the Inflammation of Obesity

(a) Cutoff values for laboratory tests of iron deficiency

Age

Serum

Transferrin

Free erythrocyte

(years)

Ferritin (g/L)

saturation (%)

Protoporhytin (g/dL RBC)

1-2

10

10

80

3–5

12

10

70

6–11

14

12

70

12–15

14

12

70

16

15

12

70

(b) Cutoff values for hemoglobin

Both sexes

  

Hemoglobin

Age (years)

  

(g/dL)

1-2

  

11.0

3–5

  

11.2

6–11

  

11.8

Female

   

12–15

  

11.9

16–19

  

12.0

Male

   

12–15

  

12.6

16–19

  

13.6

  1. *Adapted with permission from Looker AC, Dallman PR, Carroll MD, Gunter EW, Johnson CL. Prevalence of iron deficiency in the United States. JAMA. 1997; 277 : 973–976.