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AST-to-Platelet Ratio Index (APRI Score)Acute Liver Failure Study Group Index (ALFSG Index)Age, Bilirubin, INR and Creatinine Score (ABIC Score)Albumin-Bilirubin Grade (ALBI Score)BMI, AST/ALT Ratio, and Diabetes Score (BARD Score)CLIF-C ACLF Score for Acute-on-Chronic Liver Failure (CLIF-C ACLF)CLIF-C AD Score for Acute Decompensation of Cirrhosis (CLIF-C AD)CLIF-SOFA Score for Organ Failure Assessment (CLIF-SOFA)Cancer of the Liver Italian Program Score (CLIP Score)Child-Pugh Classification for Cirrhosis (Child-Pugh)Chinese University Prognostic Index (CUPI Score)Fibrosis-4 Index (FIB-4 Index)Lille Model for Alcoholic Hepatitis (Lille Model)Maddrey Discriminant Function (Maddrey DF)Model for End-Stage Liver Disease (MELD Score)NAFLD Fibrosis Score (NFS)Simplified Autoimmune Hepatitis Score (Simplified AIH)
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Maddrey Discriminant Function (Maddrey DF)

Maddrey Discriminant Function (Maddrey DF)

Alcoholic Hepatitis Severity Matrix

Formula: 4.6 × (Patient PT - Control PT) + Bilirubin

Severity Engine

Enter PT and bilirubin values to determine the alcoholic hepatitis discriminant function.

Guidelines & Evidence

Verified

Last Review: 2026-07-17

Clinical Significance

Identifying Severe Alcoholic Hepatitis

Alcoholic hepatitis is a severe, life-threatening form of alcohol-related liver disease. The Maddrey DF was the first tool to accurately identify patients at high risk of short-term mortality, defined as those who should be considered for treatment with prednisolone.

The 32 Threshold

A score of 32 or higher indicates "severe" disease, associated with a 30-day mortality rate of 30-50% without medical intervention. Patients with a score < 32 are considered "non-severe" and generally have an excellent short-term prognosis with supportive care alone.

Inclusion in Guidelines

Despite the development of newer scores like MELD and ABIC, the Maddrey DF remains the entry criterion for most clinical trials and is explicitly recommended by AASLD and EASL guidelines for initiating steroids.

How it Works

Variables Required

Prothrombin Time (PT): Patient and Control values (in seconds).
Serum Bilirubin: mg/dL.

The Scoring Formula

DF = 4.6 × (PT [patient] − PT [control]) + Serum Bilirubin [mg/dL]

Interpretation

Score ≥ 32: Severe Alcoholic Hepatitis. Score < 32: Non-severe disease.

Clinical Pearls

Bilirubin Unit Conversion

The original formula requires bilirubin in mg/dL. If your lab results are in µmol/L, divide the value by 17.1 before calculating the score.

Sepsis Screening

Before starting steroids in a patient with DF ≥ 32, you MUST rule out active infection. High-dose prednisolone in a septic patient can be fatal.

MELD Correlation

A MELD score > 20 is generally equivalent to a Maddrey DF of 32. Both scores should be used together to confirm the severity of the clinical picture.

Next Steps

Severe AH Management (DF ≥ 32)

Initiate Prednisolone 40 mg/day for 28 days.
Provide aggressive nutritional support (35-40 kcal/kg/day).
Perform a Lille Model assessment at Day 7 of treatment.
Consult addiction medicine for long-term sobriety planning.

Non-Severe AH Management (DF < 32)

Supportive care and hydration.
Thiamine and multivitamin supplementation.
Monitor for development of withdrawal symptoms.

The Evidence

Original Study

Corticosteroid therapy of alcoholic hepatitis.

Maddrey WC et al. • Gastroenterology. 1978;The foundational study that defined the discriminant function and demonstrated the survival benefit of steroids in high-risk patients.

STOPAH Trial

Prednisolone or pentoxifylline for alcoholic hepatitis.

Thursz MR et al. • N Engl J Med. 2015;The largest trial to date, which confirmed a short-term survival benefit for prednisolone (but not pentoxifylline) in severe AH defined by DF ≥ 32.

Origins & History

Dr. Willis C. Maddrey

A giant in the field of hepatology, Dr. Maddrey developed this score while at Johns Hopkins University. His work changed the treatment paradigm for alcoholic hepatitis from nihilism to active medical intervention.

An Enduring Standard

It is rare for a clinical score to remain the gold standard for over 45 years. The Maddrey DF's simplicity and robust correlation with mortality have secured its place in the modern hepatologist's toolkit.

Last Comprehensive Review: 2026-07-17

In Recent Clinical News

Scanning Medical Journals

No new significant updates or guidelines matching this topic were found today. We will check again soon.