MELD Score (End-Stage Liver Disease)

MELD Score (End-Stage Liver Disease) | Online Free Tool | Elysia Tools

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category: Health
Input types: number, checkbox
Output type: json
Sample coverage: 4
API ready: Yes

Overview

Calculate the classic UNOS/OPTN base MELD(i) score from serum creatinine, total bilirubin, INR, and recent dialysis status. The result is rounded and limited to 6–40 for educational or non-US use; it is not medical advice.

When to use

Estimate a classic base MELD(i) score for end-stage liver disease using laboratory values.
Review how creatinine, bilirubin, INR, and recent dialysis affect the calculation.
Use the formula for education or contexts where the classic MELD(i), rather than MELD-Na or MELD 3.0, is required.

How it works

1Enter positive values for serum creatinine in mg/dL, total bilirubin in mg/dL, and INR.
2Select the dialysis option if the patient received dialysis at least twice or CVVHD for at least 24 hours during the past week.
3The calculator applies the specified floors and caps: creatinine is limited to 1.0–4.0, while bilirubin and INR are floored at 1.0.
4It applies the base MELD(i) formula, rounds the result, and clamps the score to a range of 6–40.

Use cases

Medical education on the classic MELD(i) formula and its laboratory inputs.
Hepatology review of how dialysis status and value floors or caps change the score.
Non-US or historical analysis requiring the UNOS/OPTN base MELD(i) calculation.

Examples

1. Base MELD(i) without dialysis

Medical student

Background

A medical student is reviewing a case with creatinine 1.5 mg/dL, bilirubin 3.0 mg/dL, and INR 1.8.

Problem

Calculate the classic base MELD(i) score when all laboratory values are above their minimums and dialysis is not present.

How to use

Enter creatinine 1.5, bilirubin 3.0, INR 1.8, and leave dialysis unchecked.

creatinine: 1.5; bilirubin: 3.0; inr: 1.8; dialysis: false

Outcome

The raw score is approximately 21.0463, and the rounded MELD(i) result is 21.

2. Dialysis forces creatinine to 4.0

Hepatology trainee

Background

A patient has creatinine 5.0 mg/dL, bilirubin 2.0 mg/dL, and INR 1.5, with qualifying dialysis during the past week.

Problem

Apply the dialysis rule before calculating the classic base MELD(i) score.

How to use

Enter creatinine 5.0, bilirubin 2.0, INR 1.5, and select the dialysis checkbox.

FAQ

What inputs are required?

Enter serum creatinine, total bilirubin, and INR. The dialysis checkbox is optional.

How is creatinine adjusted?

Creatinine is floored at 1.0 mg/dL and capped at 4.0 mg/dL. Dialysis criteria in the past week force it to 4.0.

What happens to low bilirubin or INR values?

Bilirubin and INR values below 1.0 are calculated as 1.0.

What score range does the calculator return?

The rounded MELD(i) score is limited to 6–40.

Is this the current US adult transplant allocation score?

No. US adult allocation uses MELD-Na and MELD 3.0; this tool calculates the classic base MELD(i) for education or non-US use.

creatinine: 5.0; bilirubin: 2.0; inr: 1.5; dialysis: true

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Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Base MELD(i) without dialysis

2. Dialysis forces creatinine to 4.0

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