Final answer:
The normal reference range for blood potassium concentration is generally between 3.5 to 5.0 mM/L. Higher levels can be considered hyperkalemia, while lower levels can be considered hypokalemia.
Step-by-step explanation:
Potassium is the major intracellular cation. It helps establish the resting membrane potential in neurons and muscle fibers after membrane depolarization and action potentials. The normal potassium concentration in blood is generally between 3.5 to 5.0 mM/L. Higher levels can be considered as hyperkalemia, while lower levels can be considered as hypokalemia.
It's important to note that reference ranges may vary slightly between different laboratories, so it's always best to consult with a healthcare professional for an accurate interpretation of lab results.
Keywords: potassium, reference range, critical values, hyperkalemia, hypokalemia