Hyperkalemia laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Priyamvada Singh, M.B.B.S. [2]

Laboratory Findings

Initial

• Calcium
• Phosphate
• Magnesium
• Blood urea nitrogen (BUN)/creatinine

Extensive Evaluation

• Cortisol
• Renin
• Aldosterone levels
• Transtubular potassium gradient (by assessing potassium+ secretion)