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Hepatology · Paediatrics · Transplant

PELD-Cr calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

years

Allowed range: 0–11.99 years

Fractional calendar years for a candidate under 12 years. Under 1 year uses the factor 1. From 1 through 5.5 years the factor is the age. Above 5.5 years the factor is 5.5.

g/dL

Allowed range: 0.5–6 g/dL

Quick picks

Values under 1.0 g/dL are set to 1.0 g/dL. From 1 to 1.9 g/dL the term uses ln(albumin). Above 1.9 g/dL it uses ln(1.9).

mg/dL

Allowed range: 0.1–60 mg/dL

Quick picks

Values under 1.0 mg/dL are set to 1.0 mg/dL. From 1 to 4 mg/dL the term is 0.7854×ln(bilirubin)+0.3434×ln(4). Above 4 through 40 mg/dL it is 0.7854×ln(4)+0.3434×ln(bilirubin). Above 40 mg/dL it uses ln(40).

ratio

Allowed range: 0.5–15 ratio

Quick picks

Values under 1.0 are set to 1.0. From 1 to 2 the term is 1.981×ln(INR)+0.7298×ln(2). Above 2 through 10 it is 1.981×ln(2)+0.7298×ln(INR). Above 10 it uses ln(10).

Z

Allowed range: -8–4 Z

Quick picks

Enter the lower of the CDC 2000 height and weight Z-scores from the LMS method, using birth sex and age in months at the measurement. Below -5.0 the factor is -5. From -5.0 through -2.1 the factor is the Z-score. Above -2.1 the factor is -2.1.

mg/dL

Allowed range: 0.1–15 mg/dL

Quick picks

Below 0.2 mg/dL the term is 1.453×ln(0.2). From 0.2 through 1.3 mg/dL it is 1.453×ln(creatinine). Above 1.3 mg/dL the value is set to 1.3 mg/dL.

Result

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Clinical inputs

  • Age (years)Accepted range: 0 to 11.99
  • Albumin (g/dL)Accepted range: 0.5 to 6
  • Total bilirubin (mg/dL)Accepted range: 0.1 to 60
  • INR (ratio)Accepted range: 0.5 to 15
  • Lower height or weight Z-scoreAccepted range: -8 to 4
  • Creatinine (mg/dL)Accepted range: 0.1 to 15
  • Dialysis or CVVHD in the prior 7 days

Primary source

OPTN Policy 9.1.E, Table 9-1, in the Organ Procurement and Transplantation Network policies PDF current as of 1 October 2026. PELD-Cr = (sum of Table 9-1 terms + 1.5287) × 10 + 2.82, rounded to the nearest integer, with a minimum of 6 and no maximum. Age under 1 year contributes -0.1967 × 1, age 1 through 5.5 years contributes -0.1967 × age, and age over 5.5 years and under 12 years contributes -0.1967 × 5.5. Albumin, bilirubin, and INR below 1.0 are set to 1.0. Albumin from 1 to 1.9 g/dL contributes -1.842 × ln(albumin), and above 1.9 g/dL contributes -1.842 × ln(1.9). Bilirubin from 1 to 4 mg/dL contributes 0.7854 × ln(bilirubin) + 0.3434 × ln(4); above 4 through 40 mg/dL contributes 0.7854 × ln(4) + 0.3434 × ln(bilirubin); above 40 mg/dL uses ln(40). INR from 1 to 2 contributes 1.981 × ln(INR) + 0.7298 × ln(2); above 2 through 10 contributes 1.981 × ln(2) + 0.7298 × ln(INR); above 10 uses ln(10). The printed token In(10) is read as ln(10). The lower CDC height or weight Z-score contributes -0.1807 × -5 when below -5.0, -0.1807 × Z from -5.0 through -2.1, and -0.1807 × -2.1 when above -2.1. Creatinine below 0.2 mg/dL contributes 1.453 × ln(0.2), and 0.2 through 1.3 mg/dL contributes 1.453 × ln(creatinine). Creatinine is set to 1.3 mg/dL when it is above 1.3 mg/dL, when two or more dialysis treatments occurred in the 7 days before the test, or when 24 hours of continuous veno-venous hemodialysis occurred in those 7 days. The creatinine floor in the table is ln(0.2). (2023)

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