monocytosis

(>500/µL)

Infection

Usually TB, SBE, Listeria, Brucella, Rickettsia, fungi, parasites, syphilis

Inflammation

IBD, sarcoidosis, collagen vascular diseases

Stress

MI, splenectomy, exercise (Cytokine 2013;61:364)

Neoplasm

Hodgkin lymphoma, leukemias, MPNs, carcinomas