Is there anything else I need to know about a white blood count?
White blood count results are often compared with results of other blood tests, including a blood differential. A blood differential test shows the amount of each type of white blood cell, such as neutrophils or lymphocytes. Neutrophils mostly target bacterial infections. Lymphocytes mostly target viral infections.
A higher than normal amount of neutrophils is known as neutrophilia.
A lower than normal amount is known as neutropenia.
A higher than normal amount of lymphocytes is known as lymphocytosis.
A lower normal amount is known as lymphopenia. 
