MELD Score Calculator

This calculator helps healthcare professionals determine the severity of chronic liver disease by calculating the Model for End-Stage Liver Disease (MELD) score. It is an essential tool for prioritizing patients for liver transplantation.

MELD Score Calculator

Serum Bilirubin (mg/dL) *

INR *

Serum Creatinine (mg/dL) *

Results

MELD Score: --

Data Source and Methodology

All calculations are based strictly on the formulas and data provided by the United Network for Organ Sharing (UNOS). Learn more about UNOS.

The Formula Explained

The MELD score is calculated using the following formula:

\[ \text{MELD} = 3.78 \times \ln(\text{bilirubin}) + 11.2 \times \ln(\text{INR}) + 9.57 \times \ln(\text{creatinine}) + 6.43 \]

Glossary of Terms

Serum Bilirubin: A measure of liver function, indicating the amount of bilirubin in the blood.
INR: International Normalized Ratio, a measure of blood clotting.
Serum Creatinine: A measure of kidney function, indicating the amount of creatinine in the blood.

How It Works: A Step-by-Step Example

Suppose a patient has the following values: Serum Bilirubin = 1.2 mg/dL, INR = 1.1, Serum Creatinine = 1.0 mg/dL. The MELD score would be calculated as follows:

\[ \text{MELD} = 3.78 \times \ln(1.2) + 11.2 \times \ln(1.1) + 9.57 \times \ln(1.0) + 6.43 = 10.22 \]

Frequently Asked Questions (FAQ)

What is the MELD score used for?

The MELD score is used to assess the severity of chronic liver disease and prioritize patients for liver transplantation.

How often should the MELD score be recalculated?

It depends on the patient's condition, but typically it is recalculated every few weeks or months, as determined by the healthcare provider.

What is considered a high MELD score?

A MELD score above 15 indicates advanced liver disease, and a score above 30 is considered very high.

Can the MELD score predict mortality?

Yes, a higher MELD score indicates a higher risk of mortality in patients with liver disease.

Is the MELD score used worldwide?

Yes, it is widely used in many countries to evaluate liver disease severity and allocate organs for transplantation.

Audit: Complete

Formula (LaTeX) + variables + units

This section shows the formulas used by the calculator engine, plus variable definitions and units.

Formula (extracted LaTeX)

\[','\]

','

Formula (extracted LaTeX)

\[\text{MELD} = 3.78 \times \ln(\text{bilirubin}) + 11.2 \times \ln(\text{INR}) + 9.57 \times \ln(\text{creatinine}) + 6.43\]

\text{MELD} = 3.78 \times \ln(\text{bilirubin}) + 11.2 \times \ln(\text{INR}) + 9.57 \times \ln(\text{creatinine}) + 6.43

Formula (extracted LaTeX)

\[\text{MELD} = 3.78 \times \ln(1.2) + 11.2 \times \ln(1.1) + 9.57 \times \ln(1.0) + 6.43 = 10.22\]

\text{MELD} = 3.78 \times \ln(1.2) + 11.2 \times \ln(1.1) + 9.57 \times \ln(1.0) + 6.43 = 10.22

Formula (extracted text)

\[ \text{MELD} = 3.78 \times \ln(\text{bilirubin}) + 11.2 \times \ln(\text{INR}) + 9.57 \times \ln(\text{creatinine}) + 6.43 \]

Variables and units

No variables provided in audit spec.

Sources (authoritative):

Learn more about UNOS — unos.org · Accessed 2026-01-19
https://unos.org/

Changelog

Version: 0.1.0-draft
Last code update: 2026-01-19

0.1.0-draft · 2026-01-19

Initial audit spec draft generated from HTML extraction (review required).
Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
Confirm sources are authoritative and relevant to the calculator methodology.

Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

MELD Score Calculator

Serum Bilirubin (mg/dL) *

INR *

Serum Creatinine (mg/dL) *

Results

MELD Score: --

Data Source and Methodology

All calculations are based strictly on the formulas and data provided by the United Network for Organ Sharing (UNOS). Learn more about UNOS.

The Formula Explained

The MELD score is calculated using the following formula:

\[ \text{MELD} = 3.78 \times \ln(\text{bilirubin}) + 11.2 \times \ln(\text{INR}) + 9.57 \times \ln(\text{creatinine}) + 6.43 \]

Glossary of Terms

Serum Bilirubin: A measure of liver function, indicating the amount of bilirubin in the blood.
INR: International Normalized Ratio, a measure of blood clotting.
Serum Creatinine: A measure of kidney function, indicating the amount of creatinine in the blood.

How It Works: A Step-by-Step Example

Suppose a patient has the following values: Serum Bilirubin = 1.2 mg/dL, INR = 1.1, Serum Creatinine = 1.0 mg/dL. The MELD score would be calculated as follows:

\[ \text{MELD} = 3.78 \times \ln(1.2) + 11.2 \times \ln(1.1) + 9.57 \times \ln(1.0) + 6.43 = 10.22 \]

Frequently Asked Questions (FAQ)

What is the MELD score used for?

The MELD score is used to assess the severity of chronic liver disease and prioritize patients for liver transplantation.

How often should the MELD score be recalculated?

It depends on the patient's condition, but typically it is recalculated every few weeks or months, as determined by the healthcare provider.

What is considered a high MELD score?

A MELD score above 15 indicates advanced liver disease, and a score above 30 is considered very high.

Can the MELD score predict mortality?

Yes, a higher MELD score indicates a higher risk of mortality in patients with liver disease.

Is the MELD score used worldwide?

Yes, it is widely used in many countries to evaluate liver disease severity and allocate organs for transplantation.

Audit: Complete

Formula (LaTeX) + variables + units

This section shows the formulas used by the calculator engine, plus variable definitions and units.

Formula (extracted LaTeX)

\[','\]

','

Formula (extracted LaTeX)

\[\text{MELD} = 3.78 \times \ln(\text{bilirubin}) + 11.2 \times \ln(\text{INR}) + 9.57 \times \ln(\text{creatinine}) + 6.43\]

\text{MELD} = 3.78 \times \ln(\text{bilirubin}) + 11.2 \times \ln(\text{INR}) + 9.57 \times \ln(\text{creatinine}) + 6.43

Formula (extracted LaTeX)

\[\text{MELD} = 3.78 \times \ln(1.2) + 11.2 \times \ln(1.1) + 9.57 \times \ln(1.0) + 6.43 = 10.22\]

\text{MELD} = 3.78 \times \ln(1.2) + 11.2 \times \ln(1.1) + 9.57 \times \ln(1.0) + 6.43 = 10.22

Formula (extracted text)

\[ \text{MELD} = 3.78 \times \ln(\text{bilirubin}) + 11.2 \times \ln(\text{INR}) + 9.57 \times \ln(\text{creatinine}) + 6.43 \]

Variables and units

No variables provided in audit spec.

Sources (authoritative):

Learn more about UNOS — unos.org · Accessed 2026-01-19
https://unos.org/

Changelog

Version: 0.1.0-draft
Last code update: 2026-01-19

0.1.0-draft · 2026-01-19

Initial audit spec draft generated from HTML extraction (review required).
Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
Confirm sources are authoritative and relevant to the calculator methodology.

Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

MELD Score Calculator

Serum Bilirubin (mg/dL) *

INR *

Serum Creatinine (mg/dL) *

Results

MELD Score: --

Data Source and Methodology

All calculations are based strictly on the formulas and data provided by the United Network for Organ Sharing (UNOS). Learn more about UNOS.

The Formula Explained

The MELD score is calculated using the following formula:

\[ \text{MELD} = 3.78 \times \ln(\text{bilirubin}) + 11.2 \times \ln(\text{INR}) + 9.57 \times \ln(\text{creatinine}) + 6.43 \]

Glossary of Terms

Serum Bilirubin: A measure of liver function, indicating the amount of bilirubin in the blood.
INR: International Normalized Ratio, a measure of blood clotting.
Serum Creatinine: A measure of kidney function, indicating the amount of creatinine in the blood.

How It Works: A Step-by-Step Example

Suppose a patient has the following values: Serum Bilirubin = 1.2 mg/dL, INR = 1.1, Serum Creatinine = 1.0 mg/dL. The MELD score would be calculated as follows:

\[ \text{MELD} = 3.78 \times \ln(1.2) + 11.2 \times \ln(1.1) + 9.57 \times \ln(1.0) + 6.43 = 10.22 \]

Frequently Asked Questions (FAQ)

What is the MELD score used for?

The MELD score is used to assess the severity of chronic liver disease and prioritize patients for liver transplantation.

How often should the MELD score be recalculated?

It depends on the patient's condition, but typically it is recalculated every few weeks or months, as determined by the healthcare provider.

What is considered a high MELD score?

A MELD score above 15 indicates advanced liver disease, and a score above 30 is considered very high.

Can the MELD score predict mortality?

Yes, a higher MELD score indicates a higher risk of mortality in patients with liver disease.

Is the MELD score used worldwide?

Yes, it is widely used in many countries to evaluate liver disease severity and allocate organs for transplantation.

Audit: Complete

Formula (LaTeX) + variables + units

This section shows the formulas used by the calculator engine, plus variable definitions and units.

Formula (extracted LaTeX)

\[','\]

','

Formula (extracted LaTeX)

\[\text{MELD} = 3.78 \times \ln(\text{bilirubin}) + 11.2 \times \ln(\text{INR}) + 9.57 \times \ln(\text{creatinine}) + 6.43\]

\text{MELD} = 3.78 \times \ln(\text{bilirubin}) + 11.2 \times \ln(\text{INR}) + 9.57 \times \ln(\text{creatinine}) + 6.43

Formula (extracted LaTeX)

\[\text{MELD} = 3.78 \times \ln(1.2) + 11.2 \times \ln(1.1) + 9.57 \times \ln(1.0) + 6.43 = 10.22\]

\text{MELD} = 3.78 \times \ln(1.2) + 11.2 \times \ln(1.1) + 9.57 \times \ln(1.0) + 6.43 = 10.22

Formula (extracted text)

\[ \text{MELD} = 3.78 \times \ln(\text{bilirubin}) + 11.2 \times \ln(\text{INR}) + 9.57 \times \ln(\text{creatinine}) + 6.43 \]

Variables and units

No variables provided in audit spec.

Sources (authoritative):

Learn more about UNOS — unos.org · Accessed 2026-01-19
https://unos.org/

Changelog

Version: 0.1.0-draft
Last code update: 2026-01-19

0.1.0-draft · 2026-01-19

Initial audit spec draft generated from HTML extraction (review required).
Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
Confirm sources are authoritative and relevant to the calculator methodology.

Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn