
How is the sodium blood test done? This test is performed on a blood sample, obtained by venipuncture. A technician will insert a small needle into a vein on your arm or hand.
What to expect during a sodium blood test?
What to Expect During a Sodium Blood Test
- Purpose of the Test. The use of a sodium test is to determine whether your levels are too low or too high — both of which can cause a variety ...
- Risk and Contraindications. ...
- Before the Test. ...
- During the Test. ...
- After the Test. ...
- Interpreting the Results. ...
What is the normal range for sodium blood test?
Your doctor may order a sodium blood test as part of an electrolyte panel. Normal sodium levels in your blood are between 135 and 145 milliequivalents per liter (mEQ/L). This measures how much sodium is able to interact with other molecules in your blood, so that your water levels remain regulated.
What does high sodium mean in a blood test?
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. Other names: Na test What is it used for? A sodium blood test may be part of a test called an electrolyte panel.
What causes low sodium in a blood test?
What causes low sodium in your blood test?
- cutting back on fluid intake.
- adjusting the dosage of diuretics.
- taking medications for symptoms such as headaches, nausea, and seizures.
- treating underlying conditions.
- infusing an intravenous (IV) sodium solution.

What blood test shows your sodium level?
A sodium blood test (also called a serum sodium test) is a way for your health care provider to measure the amount of sodium in your blood.
Is there a way to test sodium levels at home?
A tool, called a hydrometer, is used for at-home measuring of sodium levels.
How do you detect low sodium?
Hyponatremia signs and symptoms may include:Nausea and vomiting.Headache.Confusion.Loss of energy, drowsiness and fatigue.Restlessness and irritability.Muscle weakness, spasms or cramps.Seizures.Coma.
Can a blood test detect high sodium?
A sodium blood test is used to detect an abnormal sodium level, including low sodium (hyponatremia) and high sodium (hypernatremia). It is often used as part of an electrolyte panel or basic metabolic panel for a routine health exam.
What happens when your body is low on sodium?
Sodium is an electrolyte that plays an essential role in regulating levels of water and other substances in the body. When sodium levels in the blood become too low, it leads to hyponatremia, causing symptoms that include lethargy, confusion, and fatigue.
Does eating salt increase sodium levels?
Increasing salt intake increased sodium excretion, but also unexpectedly caused the kidney to conserve water. Excess sodium was thus released in concentrated urine.
What can cause a person to have 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.
What causes sodium levels to drop?
Kidney problems So, the most common reason for low sodium is a kidney problem. When the kidneys are not functioning normally, which can be seen in chronic kidney disease or even temporary dehydration, the body holds too much water. And the proportion of sodium compared to water in the body lowers the sodium level.
How do you keep your sodium levels normal?
Cut back on calories. The more food you eat, the more sodium you will consume. This is why achieving and maintaining a healthy weight helps to limit sodium consumption. "If you reduce your caloric intake, you are eating less of processed and restaurant foods that have sodium," Dr. Antman says.
What happens if sodium is high?
Hypernatremia typically causes thirst. The most serious symptoms of hypernatremia result from brain dysfunction. Severe hypernatremia can lead to confusion, muscle twitching, seizures, coma, and death.
What medications cause high sodium levels?
Drug Induced HypernatraemiaDiuretics.Sodium bicarbonate.Sodium chloride.Corticosteroids.Anabolic steroids.Adrenocorticotrophic steroids.Androgens.Oestrogens.
What can cause sodium to be high?
What causes a high sodium level (hypernatremia)?Sweating, such as from excessive heat, exercise, or even a fever.Gastrointestinal losses, like vomiting or diarrhea.Excessive urination, from things like diuretic medications or increased blood sugar levels in people with diabetes.
Can I test my electrolytes at home?
An electrolyte panel or an electrolyte test at home can help determine whether there is an acid-base imbalance and evaluate the amounts of electrolytes in the blood. A lab or home electrolyte test tracks the treatment effectiveness for an organ imbalance that affects its function.
Can you test sodium levels in urine?
A test for sodium in the urine is a 24-hour test or a one-time (spot) test that checks for how much sodium is in the urine. Sodium is both an electrolyte and a mineral. It helps keep the water (the amount of fluid inside and outside the body's cells) and electrolyte balance of the body.
Will eating more 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.
What Is a Sodium Blood Test?
A sodium blood test (also called a serum sodium test) is a way for your health care provider to measure the amount of sodium in your blood. This test is often part of a group of tests that measure different substances in your blood, including:
Where to draw blood for sodium?
For the test, a technician will draw blood, usually from the inside of the elbow area or back of the hand.
What is the most common form of sodium in food?
Most foods have sodium in them. The most common form is sodium chloride, found in table salt. Your body loses a certain amount of sodium each day through sweat and when you go to the bathroom. A sodium blood test will measure your sodium level, because too little or too much can cause problems.
How to draw blood from a punctured arm?
The technician will tie an elastic band around your arm so your veins will swell, which makes drawing blood easier. They will then insert a needle into the vein, and blood will collect in a glass vial or a tube. They’ll untie the band on your arm. After the blood is collected, the technician will take out the needle and cover the puncture site.
What does it mean when your sodium level is too low?
If the levels are too low, that’s called hyponatremia. You may not need to worry about one slightly high or low sodium blood test. Your doctor will look at how the results relate to other tests, your overall health, and medical history. It’s possible that they’ll repeat the test.
What does it mean when your sodium is too high?
If your sodium levels are too high for the amount of water in your body, it’s called hypernatremia. If the levels are too low, that’s called hyponatremia.
What is a metabolic panel?
A basic metabolic panel (BMP) is also called an electrolyte panel or a Chemistry panel or a Chem 7. It checks electrolytes, the acid to base balance of your blood, and blood glucose levels. A comprehensive metabolic panel (CMP) checks electrolytes, but also checks blood protein levels and your liver function.
What is the test for sodium?
Sodium levels are often measured with other electrolytes in another test called the anion gap. An anion gap test looks at the difference between negatively charged and positively charged electrolytes. The test checks for acid imbalances and other conditions. References.
What is a sodium blood test?
A sodium blood test measures the amount of sodium in your blood. Sodium is a type of electrolyte. Electrolytes are electrically charged minerals that help maintain fluid levels and the balance of chemicals in your body called acids and bases. Sodium also helps your nerves and muscles work properly.
What happens during a sodium blood test?
A health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes.
What does it mean when your sodium levels are low?
If your results show lower than normal sodium levels, it may indicate: Diarrhea. Vomiting. Kidney disease. Addison disease, a condition in which your body's adrenal glands don't produce enough of certain types of hormones. Cirrhosis, a condition that causes scarring of the liver and can damage liver function.
What does it mean when your sodium levels are higher than normal?
If your results show higher than normal sodium levels, it may indicate: Diarrhea. A disorder of the adrenal glands. A kidney disorder. Diabetes insipidus, a rare form of diabetes that happens when the kidneys pass an unusually high volume of urine. If your results show lower than normal sodium levels, it may indicate: Diarrhea.
Why is sodium important?
Sodium also helps your nerves and muscles work properly. You get most of the sodium you need in your diet. 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. ...
Can you have a sodium test if you have too much sodium?
Your health care provider may have ordered a sodium blood test as part of your regular checkup or if you have symptoms of too much sodium (hypernatremia) or too little sodium (hyponatremia) in your blood. Symptoms of high sodium levels (hypernatremia) include: Symptoms of low sodium levels (hyponatremia) include:
What is the normal sodium level in blood?
Normal levels of blood sodium range from 135 to 145 mEq / L or mmol / L [ 8 ].
Why does blood sodium increase?
Blood sodium can increase above normal when people don’t drink enough water or have an excessive salt intake. It can also increase due to health issues such as kidney disease. Elevated sodium is more common in the elderly, because of a decline in kidney function and a lower intake of liquids [ 5, 6, 7 ].
What is Sodium?
Sodium is a positive ion and one of the body’s main electrolytes, which are minerals we need in relatively large amounts. It plays vital roles in controlling blood pressure, fluid balance, and the acid-base balance in the blood. In addition, sodium is needed for proper nerve and muscle function [ 1 ].
What is it called when sodium levels are low?
When sodium levels are low, this is called hyponatremia (“hypo”= less than normal, “natremia”= sodium in the blood).
How to reduce sodium in your diet?
Lower your salt intake. Avoid foods high in sodium , such as breads, cheeses, and processed foods in general [ 7, 39 ]. Reducing your salt intake can be beneficial even when your sodium returns to normal [ 40 ].
How to lower sodium levels?
None of these strategies should ever be done in place of what your doctor recommends or prescribes! Drink water in moderation. Drinking too much water will further decrease your sodium levels. If you are sweating excessively due to exercise or sauna, make sure to replenish your electrolytes as well as water.
What drugs increase sodium levels?
Aging, associated with a decline in kidney function and a lower intake of liquids [ 6] Drugs that can increase sodium levels include: Antibiotics [ 35] Corticosteroids (hydrocortis one, prednisone), used to treat a variety of inflammatory conditions and diseases [ 36]
What is sodium blood test?
The sodium blood test measures the amount of sodium in the blood. Sodium can also be measured using a urine test.
What is the normal sodium level?
The normal range for blood sodium levels is 135 to 145 milliequivalents per liter (mEq/L). Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your provider about the meaning of your specific test results.
Why is sodium high?
Higher than normal sodium level is called hypernatremia. It may be due to: Increased fluid loss due to excessive sweating, diarrhea, burns, or use of diuretics.
What is the most common form of sodium?
Sodium is found in most foods. The most common form of sodium is sodium chloride, which is table salt. This test is usually done as part of an electrolyte or basic metabolic panel blood test. Your blood sodium level represents a balance between the sodium and water in the food and drinks you consume and the amount in your urine.
Is it safe to take blood from one side of the body?
There is very little risk involved with having your blood taken. Veins and arteries vary in size from one person to another and from one side of the body to the other. Taking blood from some people may be more difficult than from others.
How to test sodium?
Testing Sodium by Flame Photometer. An alternative method to test Sodium is by a flame photometer – these are benchtop units and cannot be used for portable testing, but they do offer very high accuracy and can measure a range of sample types including clinical samples. They also have the added benefit of being able to test other ions by changing ...
What is the best probe for sodium?
The Hach Intellical probe for Sodium is a popular choice, and can be used with their meters such as the HQ4100 meter.
What is the best sodium meter?
For a small, portable meter which is easy to use, the Laqua Twin So dium meter is a good option. This is ideal for starting out in measuring sodium, as it is relatively low cost, easy to use and can handle a wide range of samples.
What ions can be added to Jenway flame photometer?
They also have the added benefit of being able to test other ions by changing the filters, for example the standard Jenway PFP7 flame photometer comes with filters for Sodium and Potassium, but Calcium, Barium and Lithium can also be added.
Is sodium chloride a color?
Since Sodium compounds are not coloured (like the Sodium Chloride above, they are just white!) we can’t use this colour change to get a result.
Can you test food products with a salt meter?
Food products can even be tested directly using this meter, though they must be moist to be able to be read (e. g. dried rice would not read, but cooked rice would). Depending on the result you require, you may prefer the Laqua Twin Salt meter which gives a reading in % salt rather than mg/L Sodium. Laqua Twin Sodium meter.
Can sodium be tested?
Due to the nature of sodium’s chemistry, it cannot be tested by a simple test kit method – we’ve taken a look at why this is, and explored what options are available for testing sodium. Sodium Chloride – aka basic table salt.
What is the best tool to measure salt levels in a fish tank?
If you are maintaining a saltwater fish tank, you will want to keep the salt at a level for optimum fish health. A tool, called a hydrometer, is used for at-home measuring of sodium levels.
What is the best salt water density?
Seek a reading between 1.0256 and 1.0271 for optimum saltwater, or ocean density water. Seek a reading of 1.000 for zero salt in your drinking water.
What is it?
A sodium test checks for how much sodium is in the blood. Sodium helps the body keep the right mix of water and minerals.
Why is this test done?
This test is usually done to check the water and electrolyte balance of the body.
How do you prepare for the test?
In general, there's nothing you have to do before this test, unless your doctor tells you to.
How is the test done?
A health professional uses a needle to take a blood sample, usually from the arm.
