Liver Function Tests

AST (Aspartate Aminotransferase) Range?

10-40 U/L

AST (Aspartate Aminotransferase) Signifigance?

Enzyme in liver, heart, muscle

ALT (Alanine Aminotransferase) Range?

7-56 U/L

ALT (Alanine Aminotransferase) Signifigance?

Liver specific. Elevated = liver damage

ALP (Alkaline Phosphatase) Range?

44-147 U/L

ALP (Alkaline Phosphatase) Signifigance?

Elevated = cholestasis or bile duct obstruction, also bone disorders

GGT (Gamma-Glutamyl Transferase) Range?

9-48 U/L

GGT (Gamma-Glutamyl Transferase) Signifigance?

Elevated in biliary obstruction or alcohol abuse

Bilirubin-Total Range?

0.1-1.2 mg/dL

Bilirubin-Total Signifigance?

High = jaundice, hemolysis, liver dysfunction

Albumin Range?

3.5-5.0 g/dL

Albumin Significance?

Low = chronic liver disease, malnutrition

PT Range?

11-13.5 seconds

PT/INR Signifigance?

Prolonged = liver not making clotting factors

Ammonia Range?

14-45

Ammonia Signifigance?

High = hepatic encephalopathy