📋 Reference sheet · Liver and gut

Abnormal liver blood tests: the first result

The first abnormal liver blood test: name the pattern, then the alanine aminotransferase (ALT) ladder says at each level whether to repeat, screen, scan, stage fibrosis, refer or admit.

One page, every threshold with its number and unit. Reviewed and updated by practising UK GPs. Last reviewed 7 Oct 2026.

This sheet puts the whole decision on one page: the thresholds that change what you do, each with its number and unit, and the sources each one was checked against.

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Inside the full sheet 🔒 Thresholds, numbers and units 🔒 Sources checked against the guideline

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Related Ocean Article: Jaundice · also Alcohol-Related Liver Disease (ARLD), Cirrhosis, Gilbert's syndrome. Part of the GP reference sheets, result interpretation one page per test or finding.