Wallach's Interpretation of Diagnostic Tests: Pathways to Arriving at a Clinical Diagnosis (1004 page)

   Diagnosis of E-myeloma.

   Diagnosis of bronchopulmonary aspergillosis; a normal serum IgE level excludes the diagnosis.

   Interpretation

Increased In

   Atopic diseases

   Exogenous asthma in approximately 60% of patients

   Hay fever in approximately 30% of patients

   Atopic eczema

   Influenced by type of allergen, duration of stimulation, presence of symptoms, and hyposensitization treatment

   Parasitic diseases (e.g., ascariasis, visceral larva migrans, hookworm disease, schistosomiasis,
Echinococcus
infestation)

   Monoclonal IgE myeloma

Decreased In

   Hereditary deficiencies

   Acquired immunodeficiency

   Ataxia–telangiectasia

   Non-IgE myeloma