Monocytes are the third most common white cells (<10%).
Monocytes are increased in:
– Infections especially brucellosis, shingles, TB, bacterial endocarditis, Malaria
– Medications such as steroids
– Autoimmune diseases, sarcoidosis,
– Neutropenia
– Colitis
– Leukemia, Lymphoma
Monocytes are decreased in:
– Hairy cell leukemia