About This Test

The Sodium Test is a vital blood test that measures the concentration of sodium, an essential electrolyte required for numerous body functions, including regulating fluid balance, blood pressure, nerve signalling, and muscle activity. Abnormal sodium levels whether too high (hypernatremia) or too low (hyponatremia)- can have serious consequences for heart, kidney, and neurological health. Doctors recommend the sodium test when patients present symptoms such as dehydration, confusion, muscle weakness, seizures, or swelling. This test is commonly part of a comprehensive metabolic panel, used to monitor those with chronic kidney disease, heart failure, hypertension, or who are taking diuretics. The test involves a simple blood draw or, in some cases, a urine sample for further assessment. The kidneys tightly regulate sodium levels, and imbalances can result from excessive fluid loss, certain medications, hormone disorders, or dietary factors. Timely sodium testing helps guide prompt treatment decisions, prevent complications, and ensure proper electrolyte balance for optimal health.

Test Information

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