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Grades of Thrombocytopenia
| Grade 1 | Grade 2 | Grade 3 | Grade 4 | |
|---|---|---|---|---|
| Platelet range (× 109/L) | <100 to 75 | <75 to 50 | <50 to 25 | <25 |
The grades of thrombocytopenia are based upon National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE).41 The only modification is that the upper limit of grade 1 will be 100 × 109/L and not the lower limit of the local reference range.
