Lymphoblasts Greater than 5 Percent of Peripheral Blood White Cells

**Semantic type:** Laboratory or Test Result

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

**Synonyms:** - Lymphoblasts >5% of Peripheral Blood - Lymphoblasts Greater than 5% of Peripheral Blood - Lymphoblasts More than 5 Percent of Peripheral Blood White Cells - Lymphoblasts Over 5 Percent of Peripheral Blood White Cells