Serum Potassium (K+)
Potassium is the most abundant intracellular cation that serves important functions such as regulate acid-base equilibrium, control cellular water balance, and transmit electrical impulses in skeletal and cardiac muscles.
Normal Values for Serum Potassium
- Potassium: 3.5 – 5.0 mEq/L
Indications for Serum Potassium
- Evaluates cardiac function, renal function, gastrointestinal function, and the need for IV replacement therapy.
Nursing Considerations for Serum Potassium
- Note on the laboratory form if the client is receiving potassium supplementation.
- Clients with elevated white blood cell counts and platelet counts may have falsely elevated potassium levels.