Final answer:
Hyperkalemia is defined as a potassium level greater than the normal range of 14-20 mg/100 ml in the blood.
Step-by-step explanation:
Hyperkalemia is defined as a potassium level greater than the normal range. Normal potassium concentrations are about 14-20 mg/100 ml in the blood. When the potassium level exceeds this range, it is considered hyperkalemia.