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Sodium (Na) and Potassium (K)

Sodium blood levels are important, because sodium regulates the amount of water in the body. Potassium blood levels are also important, because a high or low potassium can cause disorders in heart rhythms.

Sodium and potassium levels should be measured as a matter of course in all patients over 65.

Underlying Diseases/Conditions

Patients with renal disease, diabetes, or a neurological disease should be tested for sodium and potassium levels.

Current Drugs Use

Sodium and potassium levels should be investigated in those patients who are taking diuretics, digoxin or steroids.

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