Types

• Differential count of leucocytes yields the relative number of eosinophils in the leucocyte population. It is possible to find the absolute number of eosinophils in circulation by performing direct and indirect absolute counts.
• Eosinophils usually have bilobed nuclei. In a stained preparation, the granule take on a deep red or brick...

Description

• 40 – 440 per µl of blood

When to get Tested

• When there is s/s such as itchy eyes, nasal congestion, asthma , dermatitis, which may suggest an allergy to one or more substances
• In case of Parasitic infections
• When there is an abnormally high or low count of WBCs
• To diagnose hypereosinophilic syndrome

Elevated Level

Elevated level (Eosinophilia)

Allergic diseases

• Bronchial asthma
• Hay fever
• Food allergy

Parasitic infestations

• Hook worm
• Round worm
• Tape worm
• Filaria

Skin diseases

• Eczema
• Pemphigus
• Dermatitis herpetiformis

Tropical pulmonary eosinophilia and Loeffler’s syndrome

Malignant neoplasia

• Eosinophilic leukemia
• Lymphoproliferative disorders e.g. Hodgkins disease
• Secondary carcinomas

Addison’s disease

Decreased Level

Decreased Level (Eosinopenia)

• Cushing syndrome
• Aplastic anemia
• ACTH therapy