<< Evidence-Based Management of Potassium Disorders in the Emergency Department (Pharmacology CME)

Time- And Cost-Effective Strategies

  • It may not be necessary to repeat the serum po-tassium blood draw if it is hemolyzed.
    Risk Management Caveat: This practice has been reported in the literature only once and is not common practice. Khodorkovsky reported that, if the serum potassium specimen is hemolyzed but the patient has a normal ECG and a GFR > 60, then the negative predictive value for true hyperkalemia was 100%.21 If laboratory tests are to be repeated, it may be cheaper to check a serum potassium only instead of another basic metabolic panel.

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