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Normal range: Between 135 and 145 mEq/L. Low range: Less than 135 mEq/L. High range: More than 145 mEq/L. Your body usually does a good job regulating the amount of sodium in your blood. When levels are off, however, body systems such as your brain and heart can be affected. Normal Sodium Levels.
Maintaining proper sodium levels in your blood is critical to health. Learn about the symptoms of low sodium, sodium blood tests, and normal sodium levels.
A normal blood sodium level is between 135 and 145 milliequivalents per liter (mEq/L). Hyponatremia occurs when the sodium in your blood falls below 135 mEq/L. Many possible conditions and lifestyle factors can lead to hyponatremia, including:
A sodium blood test is a routine test that allows your doctor to see how much sodium is in your blood. It’s also called a serum sodium test. Sodium is an essential mineral to your body.
Hyponatremia is a term for having a blood sodium level that is lower than normal. If you have blood tests, you’ll see it listed as “sodium” or “Na+” in your lab results. Sodium and potassium levels in your blood are important.
Normal sodium levels in your blood are between 135 and 145 milliequivalents per liter (mEQ/L) — anything higher or lower may be a cause for concern.
A sodium blood test measures the level of sodium in your blood. Abnormal sodium levels may indicate a kidney problem or other disorder. Learn more.