MELD / MELD-Na Calculator
Use this tool to estimate MELD and MELD-Na scores from common lab values.
Educational tool only. Clinical decisions should always be made by qualified medical professionals.
What does “meld calcular” mean?
“Meld calcular” usually refers to calculating the MELD score (Model for End-Stage Liver Disease), a clinical score used to assess liver disease severity. In many settings, the updated version called MELD-Na is used because it includes sodium and can better reflect short-term risk in advanced cirrhosis.
This page gives you a practical calculator plus a plain-language breakdown of how these scores work. If you are a patient or caregiver, think of this as a learning aid—not a substitute for hepatology care.
Why MELD matters
MELD was originally designed to predict short-term mortality risk in people with serious liver disease. Today, MELD-based systems are widely used in transplant medicine to help prioritize organ allocation.
- Higher score generally means more severe illness.
- MELD-Na adds sodium because low sodium can signal worse outcomes.
- Scores are one part of the full clinical picture, not the whole story.
Inputs used in the calculator
1) Bilirubin
Bilirubin reflects how well the liver processes breakdown products from red blood cells. Elevated values may indicate poor liver function or cholestasis.
2) INR
INR reflects blood clotting behavior. The liver makes clotting factors, so advanced liver dysfunction often increases INR.
3) Creatinine
Kidney function strongly affects outcomes in advanced liver disease. MELD incorporates creatinine, and dialysis status can significantly change the calculation.
4) Sodium (for MELD-Na)
Low sodium is common in advanced cirrhosis and can be a marker of worse prognosis. MELD-Na adjusts MELD to account for this factor.
How this MELD calculator computes the result
This tool follows commonly used clinical conventions:
- Minimum value of 1.0 is applied to bilirubin, INR, and creatinine before logarithmic calculation.
- Creatinine is capped at 4.0 mg/dL.
- If dialysis is checked, creatinine is set to 4.0 mg/dL.
- Resulting MELD is bounded to the standard clinical range (6 to 40).
- Sodium is bounded between 125 and 137 for MELD-Na calculation.
How to interpret score ranges (general guide)
Exact interpretation depends on diagnosis, trends over time, active complications, and transplant center protocols. Still, a broad educational summary is useful:
- MELD-Na < 10: Lower short-term risk range.
- 10–19: Moderate risk, close follow-up usually needed.
- 20–29: High risk and often significant decompensation.
- 30–40: Very high risk; urgent specialist-level management is typical.
Important limitations
MELD and MELD-Na are powerful, but they are not perfect. They do not directly include many meaningful factors such as active infection, frailty, nutrition, hepatic encephalopathy burden, or quality-of-life impact.
Also, lab values can change quickly. A single score from one date should never replace trending labs and physician assessment.
Best practices if you are tracking MELD
- Record each score with date and exact lab values.
- Track trends weekly or as advised by your care team.
- Bring your log to clinic visits.
- Discuss sudden changes immediately with your provider.
- Never adjust medication based on score alone.
Final note
If you searched for meld calcular, you likely need a quick and reliable way to estimate liver disease severity. This calculator can help with that educational need. For diagnosis, transplant planning, or treatment decisions, always consult hepatology or transplant specialists who can interpret your full clinical context.