Establishing the characteristics and the number of different types of white blood cells or leukocytes, are recognized in this connection:
Neutrophils, a decrease can be interpreted as bacterial infection, viral (hepatitis, infectious diseases of childhood, influenza, mononucleosis), malnutrition or alcoholism.
An increase may indicate infection with streptococcus bacteria or certain fungi.

Normal value: 50-70
Basophils: a decrease can be caused by prolonged treatment with cortisone or during pregnancy, but may be a sign of:
Thyroid disorders
urticaria
Asthma – Hay Fever
An increase is usually caused by:
anemia
Diabetes
Tuberculosis
Leukemia

Normal value: 0-2
Eosinophils: a decrease is almost always associated with a cortisone-based care, while an increase is often determined by:
asthma
urticaria
allergy drug
pneumonia
parasitosis
hayfever
poisonings
arthritis
pneumonia

Normal value: up to 4
Lymphocytes: the decrease is usually produced by treatment with chemotherapeutic drugs and cortisone, although it may be a sign of:
lupus
Hodgkin’s disease
kidney
AIDS.
An increase may represent:
parotitis (mumps)
Chickenpox – Measles
Pertussis
toxoplasmosis
mononucleosis

Normal value: 20-45
Monocytes: the decrease is significant from the clinical point of view, the increase may instead be a sign of:
arthritis
Leukemia
ovarian cancer – stomach – breast
Tuberculosis
bacterial endocarditis
Malaria
Candida
chronic ulcerative colitis.