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Glam Journal

What is the normal level of serum sodium

Author

Andrew Henderson

Updated on April 27, 2026

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: Certain medications.

What does serum sodium indicate?

Once your body takes in enough sodium, the kidneys get rid of the rest in your urine. If your sodium blood levels are too high or too low, it may mean that you have a problem with your kidneys, dehydration, or another medical condition.

Is serum sodium the same as sodium?

Serum sodium concentration is the amount of sodium relative to the volume of water in the blood; it does not reflect total body sodium content. Hyponatremic and hypernatremic patients may have decreased, normal, or increased total body sodium.

What sodium level is too high?

Hypernatremia occurs when the serum sodium concentration is higher than 145 milliequivalents per liter (mEq/l) . It means that the level of sodium in a person’s blood is too high. Two common causes of hypernatremia are insufficient fluid intake and too much water loss.

Is 124 sodium level too low?

Your blood sodium level is normal if it’s 135 to 145 milliequivalents per liter (mEq/L). If it’s below 135 mEq/L, it’s hyponatremia. Your doctor will be able to tell you whether your level is too low.

How do you fix low sodium?

  1. cutting back on fluid intake.
  2. adjusting the dosage of diuretics.
  3. taking medications for symptoms such as headaches, nausea, and seizures.
  4. treating underlying conditions.
  5. infusing an intravenous (IV) sodium solution.

What happens if sodium is low?

Low blood sodium is common in older adults, especially those who are hospitalized or living in long-term care facilities. Signs and symptoms of hyponatremia can include altered personality, lethargy and confusion. Severe hyponatremia can cause seizures, coma and even death.

Why high sodium is bad?

The body needs a small amount of sodium to function, but most Americans consume too much sodium. High sodium consumption can raise blood pressure, and high blood pressure is a major risk factor for heart disease and stroke.

Is 142 sodium level high?

Normal sodium levels are usually between 136 and 145 millimoles per liter (mmol/L). Blood sodium levels below 136 mmol/L may mean you have low blood sodium (hyponatremia). Blood sodium levels greater than 145 mmol/L may mean you have blood sodium levels that are too high (hypernatremia).

How do I test my sodium levels?

A blood test can help your doctor check for low sodium levels. Even if you don’t have symptoms of low blood sodium, your doctor may order a basic metabolic panel. This tests the amounts of electrolytes and minerals in your blood. A basic metabolic panel is often part of a routine physical.

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How do you increase sodium levels in your blood?

Intravenous (IV) fluids with a high-concentration of sodium, and/or diuretics to raise your blood sodium levels. Loop Diuretics – also known as “water pills” as they work to raise blood sodium levels, by making you urinate out extra fluid.

What is considered a dangerously low sodium level?

Severe hyponatremia occurs when levels drop below 125 mEq/L. Health issues arising from extremely low sodium levels may be fatal. Hyponatremia is the most common electrolyte disorder that doctors encounter. Research suggests that approximately 1.7 percent of people in the United States have the condition.

How long does it take to recover from low sodium?

Generally, low sodium is asymptomatic (does not produce symptoms), when it is mild or related to your diet. It can take weeks or months for you to experience the effects of low salt in your diet—and these effects can be corrected by just one day of normal salt intake.

Will eating salt help hyponatremia?

In elderly patients with a diet poor in protein and sodium, hyponatremia may be worsened by their low solute intake. The kidney’s need to excrete solutes aids in water excretion. An increase in dietary protein and salt can help improve water excretion.

Can low sodium cause high blood pressure?

It also helps maintain both intercellular and intracellular fluid balances. Too much sodium (> 145 mEq/L) can adversely affect these fluid balances and thus contribute to high blood pressure. But, too little sodium (< 135 mEq/L) can have detrimental effects as well.

Is sodium level of 126 bad?

A normal blood sodium level is around 140 mEq/L (milliequivalents per Liter). If it’s less than 135, it is considered low. When the level is below 130 or lower, more problems can occur.

What does a sodium level of 146 mean?

Hypernatremia is defined as a serum sodium level above 146 mmol/L. Hypernatremia can be caused by: Dehydration, from diarrhoea and vomiting or diuretics (usually water tablets given for high blood pressure) Kidney problems. A rare condition called diabetes insipidus, which affects the body’s ability to process water.

What does a sodium level of 130 mean?

A: The normal level of sodium in the blood is between 135 mEq/L (milliequivalents per liter) and 145 mEq/L. A level below 135 is low. Doctors call it hyponatremia. In general, a sodium level of 130 mEq/L or higher is not dangerous unless there has been a recent rapid fall from a normal blood level.

What are the symptoms of high sodium?

The main symptom of hypernatremia is excessive thirst. Other symptoms are lethargy, which is extreme fatigue and lack of energy, and possibly confusion. Advanced cases may also cause muscle twitching or spasms. That’s because sodium is important for how muscles and nerves work.

What is the minimum amount of sodium per day?

Americans eat on average about 3,400 mg of sodium per day. However, the Dietary Guidelines for Americans recommends adults limit sodium intake to less than 2,300 mg per day—that’s equal to about 1 teaspoon of table salt!

Does eating salt increase sodium levels?

These, in turn, had a number of interesting effects in the body. Increasing salt intake increased sodium excretion, but also unexpectedly caused the kidney to conserve water. Excess sodium was thus released in concentrated urine.

Why do you get low sodium?

A low sodium level has many causes, including consumption of too many fluids, kidney failure, heart failure, cirrhosis, and use of diuretics. Symptoms result from brain dysfunction.

How do you increase sodium levels naturally?

  1. Coconut water: Coconut water is profuse with electrolytes and is good for dehydration. …
  2. Banana: Banana for its rich potassium content could prove to be very effective to regulate your dipping sodium levels. …
  3. Cheese: 100g of cheese contains 215mg of sodium.

Can low sodium affect your eyes?

Hyponatremia can cause neurological problems such as seizures however its ocular side effects are not commonly encountered in daily practice. A decrease in sodium levels can cause choroidal swelling leading to hyperopic shifts.