Normal Reference Ranges
Adult
50 - 500 cells/µL
Pediatric
50 - 500 cells/µL
Clinical Significance
Specialized cells for combating multicellular parasites and mediating allergic responses. The classic mnemonic for eosinophilia is 'NAACP' (Neoplasms, Asthma, Allergies, Chronic adrenal insufficiency, Parasites).
Causes of High
- Allergies / Asthma
- Parasitic infections (Helminths)
- Drug hypersensitivity (DRESS syndrome)
- Eosinophilic granulomatosis with polyangiitis
Causes of Low
- Cushing's syndrome
- Corticosteroids
- Acute stress response