Free · Electrolytes & fluids calculators 🧪

Glucose-Associated Sodium Correction Models

Compare the constant 1.6 and 2.4 sodium correction expressions.

  • Formula & worked example
  • Private in your browser
  • No signup
Go to tool

Calculator inputs

Loading calculator…

How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Use the result with context

Health results are educational estimates, not a diagnosis or treatment recommendation. A qualified clinician can interpret measurements in the context of your health.

Formula and method

Sodium 130 mmol/L and glucose 300 mg/dL give constant-factor sodium estimates 134.8 mmol/L (2.4 factor) and 133.2 mmol/L (1.6 factor).

Adjusted sodium = measured sodium + factor × (glucose − 100)/100, factor 2.4 or 1.6.

Worked example

Enter these known values and leave the other values blank.

Patient's sodium
130 mEq/L
Serum glucose
300 mg/dL
Corrected sodium
134.8 mEq/L
Corrected sodium
133.2 mEq/L

Assumptions and limitations

  • Uses sodium in mmol/L and glucose in mg/dL. Compares historical constant-factor estimates in hyperglycemia, not sodium treatment rates or fluid dosing. These approximations do not model all water and electrolyte losses; the relationship becomes nonlinear at high glucose.
  • Use the displayed units and measurements from the same context. Editable fields support arithmetic inverses when enough independent values are supplied. Clear a preset value before solving it as an unknown.
  • This tool performs the stated arithmetic model. It does not establish a diagnosis, prescribe treatment or replace laboratory and clinical assessment.

Common questions

What does this calculation represent?

Uses sodium in mmol/L and glucose in mg/dL. Compares historical constant-factor estimates in hyperglycemia, not sodium treatment rates or fluid dosing. These approximations do not model all water and electrolyte losses; the relationship becomes nonlinear at high glucose.

Can I solve for a different field?

Clear the unknown field and enter enough independent values in the remaining editable controls. A relationship cannot recover a unique value when a dividing quantity is zero.

References

Bookify adds independently reviewed bounds: This correction model covers glucose at or above 100 mg/dL.

Explore electrolytes & fluids calculators 🧪 or browse all health calculators.