MELD Score Calculator
Use this calculator to estimate the Model for End-Stage Liver Disease (MELD) score, which is used to assess the severity of chronic liver disease and prioritize patients for liver transplantation.
Calculated MELD Score:
Understanding the MELD Score
The Model for End-Stage Liver Disease (MELD) score is a reliable numerical scale used to assess the severity of chronic liver disease. It was initially developed to predict survival in patients undergoing transjugular intrahepatic portosystemic shunt (TIPS) procedures but has since been adopted by the United Network for Organ Sharing (UNOS) and Organ Procurement and Transplantation Network (OPTN) to prioritize adult patients for liver transplantation.
How the MELD Score is Calculated
The MELD score is calculated using a specific formula that incorporates three routine laboratory values:
- Total Bilirubin: A measure of liver function, indicating how well the liver is clearing waste products. Higher levels suggest more severe liver dysfunction.
- INR (International Normalized Ratio): A measure of the blood's clotting ability, reflecting the liver's capacity to produce clotting factors. A higher INR indicates impaired liver function.
- Creatinine: A measure of kidney function. Liver disease can often impact kidney function, and elevated creatinine levels are associated with poorer outcomes.
Additionally, the patient's dialysis status plays a critical role. If a patient is on dialysis (or has had at least two dialysis treatments within the last 7 days), their creatinine value is automatically set to 4.0 mg/dL for the MELD calculation, regardless of their actual creatinine level. For all other patients, creatinine values are capped at 4.0 mg/dL and floored at 1.0 mg/dL for the calculation. Similarly, bilirubin and INR values are floored at 1.0 for calculation purposes if their actual values are lower.
Interpreting Your MELD Score
The MELD score ranges from 6 (least severe) to 40 (most severe). A higher MELD score indicates more severe liver disease and a higher risk of mortality within three months. This score is dynamic and can change as a patient's condition evolves. It is a crucial tool for transplant centers to objectively allocate donor livers to the sickest patients who are most likely to benefit from a transplant.
- 6-9: Low risk of mortality
- 10-19: Moderate risk of mortality
- 20-29: High risk of mortality
- 30-40: Very high risk of mortality
It's important to remember that the MELD score is just one factor in assessing a patient's overall health and suitability for transplantation. Clinical judgment, other medical conditions, and social factors also play a significant role in treatment decisions.
Important Considerations
This calculator provides an estimate based on the standard MELD formula. It should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider for any health concerns or before making any decisions related to your health or treatment.