You Have Advanced Liver Disease
MELD-Na is used for people with advanced liver disease from cirrhosis, hepatitis, or fatty liver disease to gauge how severe the disease has become.
AI Summary MELD-Na is a blood-based score that estimates how severe liver disease is and predicts short-term risk of complications. It uses four lab values: bilirubin, INR, creatinine, and sodium, with no imaging or procedure needed. Scores from 6 to 29 range from low to high risk, and scores of 30 or more signal very severe disease. Transplant teams recalculate it regularly to help rank urgency on the waiting list.
Source: www.liverdirectory.com
MELD-Na Score: Meaning, Calculation, and Transplant Priority
Medically Reviewed.
MELD-Na adds serum sodium to the standard MELD score to better capture risk in people with cirrhosis and ascites. It's calculated entirely from blood test results — bilirubin, creatinine, INR, and sodium — with no imaging or procedure needed. Transplant teams use it to help rank how urgently a patient needs a liver transplant.
This page explains what your MELD-Na score means, how each of the four lab values factors into the calculation, and what different score ranges indicate about your risk of complications. It also covers how transplant teams use MELD-Na to prioritize the waiting list, and how a low-sodium diet can help manage the score.
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Liver Severity Score Basics
What Is MELD-Na?
MELD-Na (Model for End-Stage Liver Disease – Sodium) is a blood-based score that estimates how severe your liver disease is and predicts your short-term risk of complications. It builds on the standard MELD score by adding serum sodium, because low sodium levels can signal more severe liver dysfunction that the original MELD score alone may underestimate.
Doctors use MELD-Na mainly to prioritize patients for liver transplantation and to guide medical management for people with cirrhosis, hepatitis, or advanced fatty liver disease. Like the standard MELD score, MELD-Na does not involve any imaging or procedure — it's calculated entirely from blood test results.
Newer models such as MELD 3.0 build further on MELD-Na by adding variables like female sex and serum albumin, aiming to improve accuracy and help address disparities in transplant outcomes.
When Doctors Order It
You May Need a MELD-Na Score If
You're Being Evaluated for Transplant
Transplant teams calculate MELD-Na to help rank how urgently a patient needs a liver transplant and to prioritize placement on the waiting list.
Your Doctor Is Assessing Complication Risk
The score helps your doctor estimate your short-term risk of complications such as liver failure, bleeding, or kidney problems.
You're Monitoring Disease Progression
Repeat MELD-Na measurements over time help track whether your liver disease is stable, improving, or worsening, and whether treatment is working.
Lab Values and Formula
The Four Values Behind Your MELD-Na Score
MELD-Na combines four blood test results into one formula. Here's what each value measures and its typical healthy range.
Bilirubin
Measures how well your liver removes bile. Higher levels mean poorer liver function.
0.1–1.2 mg/dL
Not typically part of the calculation; the formula treats results below normal as expected.
Expected range; contributes little to the MELD-Na score.
May suggest liver or bile flow changes, increased red blood cell breakdown, or benign conditions like Gilbert's syndrome. Higher bilirubin raises the MELD-Na score.
INR
Measures how well your blood clots. A longer clotting time usually means the liver isn't functioning as well.
0.8–1.1
Not typically part of the calculation; the formula treats results below normal as expected.
Expected range; contributes little to the MELD-Na score.
A higher INR means blood takes longer to clot, which can point to reduced liver function. Higher INR raises the MELD-Na score.
Creatinine
Reflects kidney function, which can be affected by advanced liver disease.
0.6–1.2 mg/dL
Not typically part of the calculation; the formula treats results below normal as expected.
Expected range; contributes little to the MELD-Na score.
Higher creatinine reflects reduced kidney function, which often worsens as liver disease advances. Higher creatinine raises the MELD-Na score.
Sodium
Shows how much sodium is in the blood. Low sodium can signal more severe liver dysfunction and is common with ascites.
135–145 mEq/L
Lower sodium can indicate more severe liver disease and worse outcomes. The MELD-Na formula adjusts the score upward as sodium drops below normal.
Expected range; contributes little to the sodium adjustment.
Not part of the sodium adjustment; the formula treats results above normal as expected.
The Formula
MELD = 6.43 + 3.78×ln(bilirubin) + 11.2×ln(INR) + 9.57×ln(creatinine). MELD-Na then adjusts this result using serum sodium, giving more weight to lower sodium levels. Your care team performs this calculation — you don't need to do the math yourself.
Risk by Score Range
MELD-Na Score Reference
6–9: Low Risk
Liver function is relatively preserved. Short-term risk of complications is low, with about a 1.9% 90-day mortality risk without transplant.
10–19: Moderate Risk
Some liver dysfunction is present, with an increased risk of complications. You may need closer monitoring. 90-day mortality risk without transplant is about 6%.
20–29: High Risk
Significant liver dysfunction with a high risk of complications; you may need urgent evaluation for transplant. 90-day mortality risk without transplant is about 19.6%.
Transplant Waiting List Priority
How MELD-Na Is Used in Transplant Care
Very High and Critical Scores (30 and Above)
A MELD-Na score of 30–39 indicates very severe liver disease and a very high risk of complications; patients at this level are typically likely candidates for urgent transplant. A score above 40 is critical, with an estimated 90-day mortality risk of about 71.3% without transplant. Your MELD-Na score isn't the only factor that determines transplant timing — blood type and donor availability in your region also play a role.
Before You Reach the Transplant Waiting List
When you're evaluated for a liver transplant, your transplant team orders the blood tests needed to calculate your MELD-Na score. This score is the key number used to rank transplant urgency on the national waiting list — you generally won't be listed until your score is high enough to reflect your level of need. Each blood draw matters: staying hydrated, following your diet, and keeping appointments helps make sure your MELD-Na truly reflects your health.
While You're on the Waiting List
If you have a condition that the MELD-Na formula doesn't fully capture — such as certain small liver tumors or severe itching from bile blockage — you may be able to apply for exception points. Once listed, your MELD-Na is recalculated regularly from fresh labs, so your priority can rise or fall over time. Keeping lab appointments, gathering updated imaging or doctor's notes for exception reviews, and working with your care team on nutrition and weight all help keep your case accurate and your candidacy strong.
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Common Questions
Answers to Common MELD-Na Score Questions
What's the difference between MELD and MELD-Na?
MELD-Na adds serum sodium to the standard MELD score. Low sodium is common in advanced liver disease and cirrhosis with ascites, and it can signal more severe illness than the original MELD score alone captures. Adding sodium improves how accurately the score predicts short-term risk.
Does getting a MELD-Na score require a procedure?
No. Both MELD and MELD-Na are calculated entirely from blood test results — bilirubin, INR, creatinine, and (for MELD-Na) sodium. Unlike imaging or biopsy, no procedure is needed.
How often is MELD-Na recalculated?
Your transplant team recalculates it regularly using fresh lab results, especially once you're on the transplant waiting list, since your score directly affects how urgently you're prioritized for a donor liver.
What is MELD 3.0, and is it different from MELD-Na?
MELD 3.0 is a newer model that builds on MELD-Na by adding factors such as female sex and serum albumin. It aims to improve accuracy in predicting 90-day mortality risk and to help correct disparities — for example, in outcomes between men and women — that earlier models underweighted.
Does a high MELD-Na score guarantee a faster transplant?
Not entirely. Blood type and donor availability in your region also affect how quickly you may receive a transplant. Some conditions the formula doesn't fully capture, like certain small liver tumors, may qualify you for separate exception points.
Medical disclaimer: LiverDirectory provides educational information and a directory of providers. It does not provide medical advice, diagnosis, or treatment. Always consult a licensed physician regarding any medical condition.