Understanding MELD scores, how they're calculated, and what they mean for your transplant priority
MELD stands for Model for End-Stage Liver Disease. It's a numerical score (ranging from 6 to 40) that predicts how urgently a patient needs a liver transplant within the next 3 months. Higher scores indicate more severe liver disease and greater urgency for transplant.
MELD is calculated using four lab values: bilirubin (liver function), INR (blood clotting), creatinine (kidney function), and sodium (for some patients). These values are entered into a formula that produces your MELD score. UNOS maintains the official MELD calculator.
There's no "good" MELD score - a higher score means you're sicker and will receive transplant priority sooner. However, being very sick (high MELD) also means higher surgical risk. The goal is to get transplanted before becoming too sick, but not so early that the risks of surgery outweigh the benefits.
There's no specific MELD score required for transplant - allocation is based on matching availability with the sickest patients first. However, most patients transplanted have MELD scores in the 25-35 range, though this varies significantly by blood type and region.
Yes, MELD scores can go up or down depending on your lab values. If your liver function improves (bilirubin goes down, INR improves), your MELD score may decrease. This is why regular monitoring is important - your score can change weekly.
The average MELD at transplant varies by region and blood type. Typically, patients transplanted have MELD scores ranging from 23-35, but some regions and blood types may have average scores higher or lower than this range.
MELD scores range from 6-40. Scores above 30 are generally considered high, indicating severe liver disease. Patients with MELD scores above 35 are at very high risk of death within 3 months without a transplant.
MELD scores are recalculated every time new lab values are entered into UNOS (typically weekly). Your transplant center reports your labs regularly to maintain your MELD score. It's important to have labs done as scheduled to keep your score current.
PELD (Pediatric End-Stage Liver Disease) is similar to MELD but used for patients under 18. It includes growth failure as a factor since children are still developing. PELD scores can go higher than 40 for very sick children.
You cannot artificially inflate your MELD score - the calculation is based on objective lab values. However, you can work with your medical team to manage your liver disease optimally, which may stabilize or improve your labs. Some patients may benefit from treatments that improve liver function temporarily.
MELD-Na is an updated MELD calculation that includes sodium levels. It was implemented to better predict mortality and improve organ allocation. Sodium is now part of the standard MELD calculation for most patients.
Blood type affects how quickly you might receive a transplant, not your MELD score itself. Type O patients typically wait longer because they can donate to any blood type but can only receive from Type O donors. This means they often need higher MELD scores to receive offers.
MELD exceptions are granted for conditions where the standard MELD score doesn't accurately reflect disease severity. Examples include hepatocellular carcinoma (HCC), certain metabolic diseases, or rare complications. Exception points can boost your MELD score above what your labs indicate.
Yes, certain conditions qualify for MELD exceptions. HCC patients with specific tumor characteristics can receive exception points. Other conditions like cholangiocarcinoma, familial amyloid polyneuropathy, or portal vein thrombosis may also qualify. Your transplant team can request exceptions on your behalf.
Your calculated MELD is based on your labs, while your allocation MELD includes any exception points you've been granted. This is the score used for organ allocation. Exception points can significantly increase your allocation MELD above your calculated score.