Anemia WHO Cut offs and grading (Wiki)

 WHO's Hemoglobin thresholds used to define anemia  (1 g/dL = 0.6206 mmol/L)
Age or gender group                     Hb threshold (g/dl)      Hb threshold (mmol/l)
Children (0.5–5.0 yrs)                  11.0                            6.8
Children (5–12 yrs)                      11.5                            7.1
Teens (12–15 yrs)                        12.0                            7.4
Women, non-pregnant (>15yrs)    12.0                            7.4
Women, pregnant                         11.0                            6.8
Men (>15yrs)                               13.0                            8.1

WHO Grading of anemia:

• Grade 1 (Mild Anemia): 10 g/dl - cutoff point for ages
• Grade 2 (Moderate Anemia): 7-10 g/dl
• Grade 3 (Severe Anemia): below 7 g/dl