Exclude: Inflammatory bowel disease, hyperthyroidism, chronic infection, diabetes mellitus, and Addison’s disease
CBC
Anemia, leukopenia in severe disease
Chem 10
Hypoglycemia, hypophosphatemia in severe disease
ECG
Anemia, leukopenia in severe disease
Hypoglycemia, hypophosphatemia in severe disease
Anorexia nervosa
Gastrointestinal disease
Bulimia nervosa
Hyperthyroidism
Metabolic syndrome
Occult malignancies
Hypothyroidism
AIDS