Blasts 5 Percent or Less of Bone Marrow Nucleated Cells

**Semantic type:** Laboratory or Test Result

**Definition:** A semi-quantitative microscopic finding indicating that 5 percent or less of the nucleated cells in a bone marrow sample are immature mononuclear cells.

**Synonyms:** - Blasts Less than or Equal to 5 Percent of Bone Marrow Nucleated Cells - M1 (less than 5% blasts)