The Differential Leukocyte Count (DLC) is a blood test that determines the percentage and absolute number of each of the five main types of white blood cells (WBCs, or Leukocytes) present in a person's blood.
While the Total Leukocyte Count (TLC) tells you the overall number of immune cells, the DLC provides a crucial breakdown, acting like an "immune snapshot" that helps doctors understand the specific cause of a high or low TLC
Each type of white blood cell has a distinct role in the immune system. The DLC reports on the following cells: Neutrophils, Lymphocytes, Monocytes, Eosinophils, Basophils