Measured Serum Sodium (mEq/L) Enter the lab value for sodium (e.g., 130)

Serum Glucose (mg/dL) Enter the lab value for glucose (e.g., 300)

Quick Examples:

Moderate Hyperglycemia Severe Hyperglycemia

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This calculator is a screening tool only, not a diagnostic instrument. It is not intended to replace professional medical evaluation. Consult a healthcare provider.

What Is Corrected Serum Sodium

Corrected serum sodium is an estimate of the true sodium level in your blood. When blood sugar is very high, it can cause water to move into the blood vessels. This dilutes the sodium and makes the measured level look lower than it really is. This calculation adjusts the number to account for that effect.

How Corrected Serum Sodium Is Calculated

Formula

The formula first finds how much the glucose level is above the normal baseline of 100 mg/dL. It divides this excess by 100 and multiplies by 1.6. This result is the "correction factor." You add this factor to the measured sodium to get the corrected value. This helps estimate the sodium level without the diluting effect of the sugar.

Why Corrected Serum Sodium Matters

Knowing the corrected sodium level is important for understanding your true electrolyte balance. It helps prevent misreading a lab test just because blood sugar is high.

Why Accurate Sodium Levels Are Important for Health

If doctors only look at the measured sodium, they might think the level is too low. This could lead to treatments that are not needed, which may be unsafe. Correcting the number provides a clearer view of what is happening in the body. This helps doctors make safer decisions about fluid and salt management.

For Advanced Users

Some experts suggest using a correction factor of 2.4 instead of 1.6 for very high glucose levels. The formula used here applies the standard 1.6 factor. You may consider discussing which factor is appropriate for your specific situation with a healthcare provider.