Myeloblasts 5 Percent or More of Peripheral Blood White Cells

**Semantic type:** Laboratory or Test Result

**Definition:** A semi-quantitative microscopic finding indicating that at least 5 percent of the nucleated cells in a peripheral leukocyte sample are immature mononuclear cells of myeloid origin.

**Synonyms:** - Myeloblasts Greater than or Equal to 5 Percent of Peripheral Blood White Cells