This lab test is from Wallach's Interpretation of Diagnostic Tests About our sources
Potassium (K)
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The following is an excerpt....
Definition
  • Potassium is a primary intracellular ion; < 2% is extracellular. High intracellular concentrations are maintained by Na-k ATPase pump, continuously transport K in to cell against concentration gradient.
  • This pump is a critical factor in maintaining and adjusting the ionic gradients, on which nerve impulse transmission ...

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