Kidney & liver

ALT

Clinical biomarkerLiver enzymeBloodU/L

A liver-associated enzyme used in routine clinical assessment.

What it measures

Alanine aminotransferase activity in blood.

Used to assess hepatocellular injury in clinical context.

Interpret with other liver markers, symptoms, medication and metabolic context.

Normal values do not exclude liver disease; elevations are nonspecific.

Evidence status

Established clinical liver marker.

Original papers, validation studies, reviews and clinical guidance connected to this measurement.

prospective cohort

Gastroenterology · 2009

ALT elevation predicted liver-related mortality but was not independently associated with overall mortality in this US population cohort.

For education and evidence exploration, not diagnosis or individualized medical advice.