Calculator Result
Enter Calculator Inputs
Example Data Table
| Scenario | Measured Sodium | Glucose | Katz Result | Hillier Result | Custom 2.0 Result |
|---|---|---|---|---|---|
| Sample A | 128.00 mEq/L | 420 mg/dL | 133.12 mEq/L | 135.68 mEq/L | 134.40 mEq/L |
| Sample B | 132.00 mEq/L | 250 mg/dL | 134.40 mEq/L | 135.60 mEq/L | 135.00 mEq/L |
| Sample C | 136.00 mEq/L | 580 mg/dL | 143.68 mEq/L | 147.52 mEq/L | 145.60 mEq/L |
These rows illustrate how higher glucose can shift the corrected sodium estimate across different correction factors.
Formula Used
This page compares three sodium correction approaches for hyperglycemia. Each method starts with measured sodium and adds a glucose-based correction.
General formula
Corrected Sodium = Measured Sodium + Factor × ((Glucose in mg/dL − 100) ÷ 100)
Katz factor: 1.6
Hillier factor: 2.4
Custom factor: User-defined value
- Glucose below 100 mg/dL adds no correction here.
- mmol/L glucose converts internally using 1 mmol/L = 18 mg/dL.
- Reference limits affect labels only, not the calculation.
How to Use This Calculator
- Enter the measured sodium from the lab report.
- Enter the serum glucose from the same testing moment.
- Select the glucose unit shown on the report.
- Keep the custom factor at 2.0 or change it.
- Set your preferred sodium reference range.
- Press Calculate Sodium Correction.
- Review the three corrected sodium results together.
- Use the chart and export buttons for documentation.
Frequently Asked Questions
1. What does this calculator estimate?
It estimates corrected sodium when glucose is elevated. The page compares three correction factors so you can see how results shift across methods.
2. Why are there three answers?
Different references use different correction factors. Showing three answers helps compare a conservative method, a larger adjustment, and your own chosen factor.
3. When does the correction become zero?
This build applies no added correction when glucose is at or below 100 mg/dL. That avoids reducing sodium for lower glucose values.
4. Can I enter glucose in mmol/L?
Yes. The form accepts mmol/L and converts it internally to mg/dL before applying the correction formulas.
5. Does the reference range change the formulas?
No. The low and high reference values only change status labels like Low, Within Range, or High.
6. What does the chart show?
The graph shows how corrected sodium would change as glucose rises, while your measured sodium remains the starting value for all methods.
7. Why include a custom factor?
Some teams prefer a local rule or study-based adjustment. The custom option lets the page adapt without rewriting the formula section.
8. Is this page enough for care decisions?
No. It is an educational calculation aid. Use it beside symptoms, fluid status, repeat labs, and professional clinical judgment.