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WBC Differential



- See Neutrophils/Left Shift 
- Lymphocytes: (24-44%) 
- Increased: Measles, German Measles, Mumps, Whooping Cough, Small pox, Chicken pox, Influenza, Hepatitis, Infectious Mononucleosis, Acute Infectious Lymphocytosis in children, Virtually any Viral Infection, Acute and Chronic Lymphocytic Leukemias; 
- Decreased: After Stress, Burns, Trauma, Nl variation, Uremia; 
- Monocytes (3-7%) 
- Increased: Bacterial infection (TB, SBE, Brucellosis, Typhoid, Recovery from Acute Infection), Protozoal infection, Infectious Mononucleosis, Leukemia, Hodgkin's dz, Ulcerative colitis, Regional Enteritis; 
- Mast Cells: 
- Mastocytosis 
- Eosinophils: (1-3%) 
- Increased: 
- Allergy: Asthma, Hizes, Hay Fever, Angioneurotic edema; 
- Parasites, Aspergillosis, Coccidioidomycosis; 
- Skin dz: Dermatitis herp., mycosis fungoides, contact dermatitis; 
- Malignancy: CML, Hodgkin's, Mycosis fungoides, Sezary, ALL 
- Medications 
- Asthma 
- Addison's dz 
- Collagen Vascular dz 
- Pulmonary dz w/ Infiltrates; 
- Decreased: 
- Steroid Rx 
- Infection, Trauma, Burns 
- Cushing's syndrome; 
- Basophils: (0-1%) 
- Increased: Chronic Myeloid Leukemia, rarely in Recovery from Infection, and from Hypothyroidism 
- Decreased: Acute Rheumatic Fever, Lobar Pneumonia, after Steroid Rx, Thyrotoxicosis, Stress