Substance guides

Liver function tests for alcohol use: What your results mean

Published January 18, 2025 · 7 min read · Updated April 2026

Reviewed for accuracy by licensed clinical professionals.

Liver function tests (LFTs) measure enzymes and proteins that indicate liver health. Elevated levels often indicate alcohol-related damage.

Key markers

ALT (alanine aminotransferase): most specific for liver damage. Elevated 2-3x normal suggests alcohol injury. AST (aspartate aminotransferase): elevated with liver and muscle damage. AST/ALT ratio above 2 suggests alcoholic liver disease. GGT (gamma-glutamyl transferase): very sensitive to alcohol. Often the first to elevate and last to normalize. Albumin and bilirubin: indicate liver synthetic function. Low albumin or high bilirubin suggest advanced damage.

Recovery

Most liver enzyme elevations normalize within 2-6 weeks of abstinence. GGT may take longer. Normalization of labs is one of the most motivating early recovery milestones.

Authoritative sources

This article references guidelines from: NIDA · SAMHSA · CDC

Frequently asked questions

How do I find help?

Call SAMHSA at 1-800-662-4357 or search our directory at treatmentassociation.com/directory.

Does insurance cover treatment?

Yes. Most insurance covers substance abuse treatment under the Mental Health Parity Act.

Is this treatable?

Yes. Addiction is a treatable medical condition. Recovery is possible at any stage.

Disclaimer: Informational only. Not medical advice. SAMHSA: 1-800-662-4357.