Total leucocyte count (TLC) or white blood cell count measures the number of leucocytes in

the body. The differential leucocyte count (DLC) measures the percentage of each type of

WBC present in the blood. A differential count also can detect immature WBCs and

abnormalities. DLC test measures the percentage of every single type of WBC present in the

blood. A differential count also can detect immature WBCs and abnormalities such as

anemia, leukemia, and various infections. White blood cells or Leukocytes are an essential

part of the immune system that helps fight against infections.