Sodium concentration in serum/plasma (measured by turbidimetry)

Why Your Sodium Level Matters

Sodium is vital for maintaining proper fluid balance in your body. Too little or too much can lead to serious health issues, such as swelling, muscle cramps, or even seizures in extreme cases. Your doctor may order this test if you have symptoms like excessive thirst, confusion, or unexplained weight changes.

What Can Affect Your Sodium Level?

Several factors can influence sodium levels, including diet (especially high-salt foods), kidney function, dehydration, or certain medications. Conditions like heart failure, kidney disease, or hormonal imbalances may also play a role.

Common Reasons for Testing

Your doctor might recommend this test if you have symptoms like high blood pressure, swelling in your legs or hands, confusion, or if you’ve had recent changes in your urine or thirst levels. It’s also commonly checked during routine health evaluations or if you’re taking diuretics or steroids.

What to Expect During the Test

This test involves drawing a small amount of blood from a vein, usually in your arm. You may feel a slight pinch, but it’s quick and painless. The blood is then sent to a lab for analysis. No special preparation is needed, but you should avoid eating or drinking for a short time before the test if instructed.