Lymphocytosis (lim-foe-sie-TOE-sis), or a higher lymphocyte rely, is an improve in white blood cells named lymphocytes. Lymphocytes enable struggle off ailments, so it is ordinary to see a non permanent improve soon after an an infection.

A rely significantly increased than three,000 lymphocytes in a microliter of blood is usually considered to be lymphocytosis in older people. In little ones, the threshold for lymphocytosis differs with age. It can be as higher as nine,000 lymphocytes for each microliter. The correct thresholds for lymphocytosis can range a bit from a person lab to a different.