Laboratory for Molecular Diagnostics
Center for Nephrology and Metabolic Disorders

Hypokalemia

Hypokalemia is a serum potassium concentration below the normal range.

Demarcation

A false low serum potassium concentration may be measured when the sample was previously diluted, which sometimes can occur when the blood is drawn through a catheter.

Diseases

Apparent mineralocorticoid excess
Hypokalemia in AME patients is the result of excessive stimulation of the mineralocorticoid receptor.
Bartter syndrome
In Bartter syndrome, hypokalemia is found with metabolic alkalosis and hypochloremia.
Gitelman syndrome
Along with hypomagnesemia, hypokalemia is a cardinal symptom of Gitelman syndrome.
Glucocorticoid resistance
Hypokalemia is the direct consequence of hyperaldosteronism.
Update: June 23, 2016