• Labs
  1. Hypokalemia with Urine Potassium < 20 meq/day
  1. Chronic Diarrhea
  2. Acute Leukemia
  3. Aminoglycosides
  4. High dose Penicillin
  5. Colonoscopy Bowel Preparation
  6. Hypomagnesemia
    1. Intracellular Magnesium (99% of body stores) is not reflected by Serum Magnesium level
    2. Consider empiric Magnesium Replacement in refractory Hypomagnesemia
  7. Constant GI loss and inadequate intake (<10-20 meq/day)
  8. Skin losses from sweating
  1. Acute Diarrhea
  2. Amphotericin
  3. Diabetic Ketoacidosis
  4. Laxative abuse
  5. Intestinal or biliary fistula
  6. Ureterostomy
  7. Toluene
  1. Gastrointestinal loss (Consider Bulimia)
    1. Vomiting
    2. Nasogastric suction
  2. Discontinued Diuretics