This page forms a liver-disease severity estimate from laboratory inputs and its dialysis and sodium rules.
Meld Na (UNOS/OPTN)
Form
Results
MELD Score
0
Estimated 3-Month Mortality
0
Table of Contents
1
What is Meld Na (UNOS/OPTN)?
2
How to Use This Calculator
- Enter or select Recent dialysis, Creatinine, Total bilirubin, INR, Sodium.
- Check the unit beside each measurement. For a percentage or rate, use the scale and time period stated in the form.
- Choose Calculate, then compare the output with the formula and example below. If you change a value or option, calculate again to update the result.
3
Formula Used
A MELD-family score combines logarithms of bilirubin, INR and creatinine; sodium adjustment depends on the version.
4
Variables Explained
| Input | What it means |
|---|---|
| Recent dialysis | Use the observed finding or laboratory value for this criterion, following the definition shown in the form. |
| Creatinine | The laboratory creatinine concentration; mg/dL and µmol/L need different numeric values. |
| Total bilirubin | Use the observed finding or laboratory value for this criterion, following the definition shown in the form. |
| INR | Use the observed finding or laboratory value for this criterion, following the definition shown in the form. |
| Sodium | Sodium concentration, normally in mmol/L or mEq/L; follow the form’s unit label. |
5
Worked Example
An INR increase changes the modeled score even if the other inputs stay fixed; values must be entered in the specified units.
6
Why Use This Calculator?
Use the calculation to make the method and its inputs easier to check with a healthcare professional. Its meaning depends on the clinical setting and on whether the underlying method is appropriate for that person.
7
Common Mistakes
- Original MELD, MELD-Na and MELD 3.0 differ. Do not treat this implementation as an official transplant-allocation score.
8
Frequently Asked Questions
Is this result a diagnosis or treatment instruction?
No. It describes a calculation or score from the supplied information. A qualified clinician must check the measurements, the method’s applicability and the wider clinical picture.
Can I enter the units from any lab report?
Use the units specified in the form and select a conversion only where the page provides one. Different substances need different conversion factors; a mismatch can produce a plausible but incorrect result.
9
Sources & References
Mini Calculator provides online calculators for multiple niches including mathematical, financial, Health, informative, Chemistry, physics, statistics, and conversions. You can use any calculator for free without any limits.