A DLC test is one of the tools healthcare providers use in the initial assessment of leukemia, a type of cancer that affects the blood and bone marrow. In leukemia, abnormal white blood cells, such as immature or blast cells, may be present in the DLC results. An elevated white blood cell count, abnormal white cell differentials, or low platelet counts can also indicate leukemia. However, a definitive diagnosis of leukemia requires further testing, including bone marrow aspiration and biopsy, genetic analysis, and additional blood tests. The DLC test provides valuable preliminary information that guides healthcare providers in the diagnostic process and helps determine the type and severity of leukemia.