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About MELD and PELD

The MELD and PELD calculators use specific formulas approved by the OPTN/UNOS Board of Directors for allocation of livers by the OPTN match system.

The calculators collect data elements used in both the MELD and PELD score calculations.

Please note the following:

The MELD score calculation uses:

  • Serum Creatinine (mg/dl)*
  • Bilirubin (mg/dl)
  • INR
  • Serum Sodium (mEq/L)

*For patients who have had dialysis twice within the last week, or 24 hours of CVVHD, the creatinine value will be automatically set to 4 mg/dl.

The PELD score calculation uses:

  • Albumin (g/dl)
  • Bilirubin (mg/dl)
  • INR
  • Growth failure (based on gender, height and weight)
  • Age at listing

Organ Procurement & Transplantation Network

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