Anemia - WHO's Hemoglobin thresholds used to define anemia[32] (1 g/dL = 0.6206 mmol/L)

In modern counters, four parameters (RBC count, hemoglobin concentration, MCV and RDW) are measured, allowing others (hematocrit, MCH and MCHC) to be calculated, and compared to values adjusted for age and sex. Some counters estimate hematocrit from direct measurements. [medical citation needed]

Reference 1: Hb threshold (g/dl) and Hb threshold (mmol/l).

Reference 2: Children (0.5–5.0 yrs), Children (5–12 yrs), Teens (12–15 yrs), Women, non-pregnant (15yrs), Women, pregnant and Men (15yrs).

Source: http://en.wikipedia.org/wiki/Anemia