Table 1 Grading of anemia according to the National Cancer Institute classification.

From: Cancer-related anemia and recombinant human erythropoietin—an updated overview

Grade Symptom severity Hemoglobin values
0 Within normal limits 12.0–16.0 g/dl for women and 14.0–18.0 g/ dl for men
1 Mild 10 g/dl to levels within normal limits
2 Moderate 8.0–10.0 g/dl
3 Serious/severe 6.5–7.9 g/dl
4 Life threatening <6.5 g/dl