Differential Diagnosis

Vomiting or nasogastric suction

Ingestion of certain drugs, such as diuretics

Numerous endocrine disorders, including Cushing syndrome and hypoparathyroidism

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Suggested Additional Lab Testing

Serial blood gases to assess arterial pH, arterial h2co3 and arterial pco2 are important when the disease is evolving or resolving.

Tests relevant to the diagnosis of Cushing syndrome and hypoparathyroidism may be relevant if there is suspicion of these disorders as a cause for the metabolic alkalosis.