Calculate MELD, MELD-Na, and MELD 3.0 scores for liver disease severity and 3-month mortality-oriented reference context.
The Model for End-Stage Liver Disease (MELD) score estimates short-term mortality in patients with liver disease. The original MELD model was built from laboratory values, and later versions added sodium and then albumin plus a sex adjustment to improve prediction.
This calculator shows the original MELD, MELD-Na, and MELD 3.0 together so you can compare how the scoring systems change the result for the same patient. The score range is bounded, and higher values indicate more severe liver disease on the MELD scale.
That makes it useful for quick severity checks and for understanding how sodium or albumin shifts the final score.
MELD is useful because it turns a small set of routine labs into a severity estimate that is easy to compare over time. Seeing the older and newer versions side by side also makes it easier to understand how sodium and albumin change the score.
The page is best treated as a reference worksheet. It does not model listing status, exception points, or allocation outcomes.
MELD = 10 × [0.957 × ln(Cr) + 0.378 × ln(Bil) + 1.120 × ln(INR) + 0.643] MELD-Na = MELD − Na − 0.025 × MELD × (140 − Na) + 140 Sodium bounded 125-137 MELD 3.0 = 1.33(female) + 4.56×ln(Bil) + 0.82×(137−Na) − 0.24×(137−Na)×ln(Bil) + 9.09×ln(INR) + 11.14×ln(Cr) + 1.85×(3.5−Alb) − 1.83×(3.5−Alb)×ln(Cr) + 6 All scores bounded 6-40. Cr capped at 4.0; if dialysis ≥2x/week, Cr = 4.0.
Result: MELD 15, MELD-Na 15
With bilirubin 2.0, creatinine 1.5, INR 1.5, and sodium 137, the original MELD and MELD-Na both round to 15. That places the case in a moderate short-term severity band with an estimated 3-month mortality around 6% on commonly cited MELD tables.
Original MELD uses bilirubin, creatinine, and INR. MELD-Na adds sodium, which can materially change the score in hyponatremic patients. MELD 3.0 adds albumin and a sex adjustment to improve short-term mortality prediction.
The published MELD frameworks cap or floor some values so extremely low or high laboratory numbers do not distort the score. That is why this calculator bounds creatinine, bilirubin, INR, and sodium before calculating the final result.
MELD is best treated as a severity worksheet and mortality-oriented reference. It does not capture every aspect of liver disease, and it should not be used as a stand-alone transplant, treatment, or triage engine.
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This calculator reports three liver-disease severity models side by side. The classic MELD calculation uses bilirubin, INR, and creatinine with the usual bounded laboratory inputs and dialysis cap. MELD-Na adds the sodium adjustment used in transplant prioritization, and the MELD 3.0 output adds albumin and a sex adjustment consistent with the updated model used in the modern allocation era.
The page is designed for severity framing and transplant-priority discussions, not as a substitute for official OPTN calculation, exception-point review, or transplant-center decision-making. Exception diagnoses and listing rules can materially change real-world transplant priority beyond the laboratory formula alone.
Original MELD uses bilirubin, creatinine, and INR. MELD-Na adds sodium, and MELD 3.0 adds albumin plus a sex adjustment to improve prediction.
Creatinine is capped so very high values do not overwhelm the rest of the score. Dialysis within the specified time window is also handled by setting creatinine to the capped value in the published framework.
Some transplant systems use exception processes when the laboratory MELD score does not fully capture disease burden. This calculator does not model those exception frameworks.
That depends on the care setting and the pace of clinical change. This page is best used as a score worksheet; timing of repeat testing varies by program and patient context.
MELD was designed for chronic liver disease. Acute liver failure is usually assessed with different frameworks, so this page should not be treated as a stand-alone acute liver failure triage tool.