A Sodium Test detects hyponatremia or hypernatremia associated with dehydration, edema, and a variety of diseases. Sodium (found in table salt) is one of the most important minerals in the body. It is also an electrolyte, which means it carries an electrical charge when it is dissolved in blood. Sodium helps regulate the water balance (the amount of fluid inside and surrounding the cells) and electrolyte balance of the body. Sodium also plays an important role in nerve and muscle functions. Small amounts of sodium are lost through the skin in sweat.
Almost all foods contain sodium naturally or as an ingredient, such as table salt (sodium chloride) or baking soda (sodium bicarbonate) added in processing or while cooking. Many medicines and other products also contain sodium, including laxatives, aspirin, mouthwash, and toothpaste.
Too much sodium in the diet may raise blood pressure in some people. For those who already have high blood pressure, a diet high in sodium may further increase their risk of heart disease, stroke, and kidney damage. High sodium intake can worsen heart failure and can increase the amount of water retained by the body, leading to swelling of the legs and hands. Taking in more than 4 grams (g) of sodium per day causes problems for some people. A Sodium Test may be ordered to monitor patients taking medications that can affect sodium levels.
Low blood sodium levels are uncommon and most often occur as a side effect of taking drugs that increase urination (diuretics). Severe diarrhea or vomiting or heavy sweating may also cause low blood sodium levels.
You may order a Sodium Test online, or for more information call LabSafe toll free at 1-888-333-LABS to speak with one of our medical counselors.
