What is a dangerously high sodium level?
Normal levels of serum sodium range from 135 mmol/L to 145 mmol/L. Too much Sodium level of more than 145 mmol/L is referred to as hypernatremia. The severity of signs and symptoms occurs when sodium levels reach above 160 mmol/L. At the same time, sodium levels greater than 180 mmol/L or 190 mmol/L can increase the mortality rate in many individuals.