Bone Marrow Blasts Decreased by 50 Percent or More Compared to Pretreatment Level

**Semantic type:** Laboratory or Test Result

**Definition:** A semiquantitative finding indicating that the amount of immature mononuclear cells in a subject's sample of nucleated cells from bone marrow has decreased by 50 percent or more over the value recorded for a pretreatment sample from that subject.

**Synonyms:** - Decrease of Pretreatment Bone Marrow Blast Percentage by at Least 50 - Decrease of Pretreatment Bone Marrow Blast Percentage by at Least 50 Percent