No, a lipid panel is NOT part of a standard hepatic function panel.
A hepatic function panel (HFP) consists of liver-specific enzymes and markers—primarily ALT, AST, alkaline phosphatase (ALP), bilirubin, albumin, and sometimes GGT—but does not include lipid measurements (total cholesterol, LDL-C, HDL-C, triglycerides). These are separate laboratory test panels ordered for different clinical purposes 1, 2.
What Constitutes a Standard Hepatic Function Panel
According to the 2018 Gut guidelines on abnormal liver blood tests, the standard liver blood test panel includes 1:
- Aminotransferases: ALT and AST (markers of hepatocellular injury)
- Alkaline phosphatase (ALP): Marker of cholestasis
- Bilirubin: Total and conjugated fractions
- Albumin: Marker of hepatic synthetic function
- Prothrombin time (PT)/INR: Assessment of clotting factor production
- GGT: Often added to improve sensitivity, particularly for NAFLD and alcohol-related liver disease
The 2023 ACR Appropriateness Criteria confirms that routine liver chemistries include ALT, AST, ALP, and bilirubin, with albumin and prothrombin time as actual markers of hepatocellular synthetic function 2.
Why the Confusion Exists
The confusion arises because:
- The liver metabolizes lipids: Albumin binds fatty acids, and the liver plays a central role in lipid metabolism 1
- Lipid abnormalities correlate with liver disease: Particularly in NAFLD, where elevated triglycerides and total cholesterol correlate with hepatic steatosis 3, 4
- Both panels may be ordered together: In patients with suspected metabolic liver disease, clinicians often order both panels simultaneously to assess cardiovascular risk and liver function
However, correlation does not mean inclusion—lipid panels remain a separate test ordered for cardiovascular risk assessment, not liver function evaluation.
Clinical Implications
When evaluating liver disease:
- Order a hepatic function panel to assess liver injury patterns (hepatocellular vs. cholestatic) and synthetic function
- Consider adding a lipid panel separately if you suspect NAFLD or metabolic syndrome, as dyslipidemia is a common comorbidity 3, 4
- Do not assume lipid values are included when ordering "liver function tests"—verify your institution's specific panel components
Common Pitfall
The most common error is assuming that because lipid metabolism occurs in the liver, lipid values are automatically included in liver function testing. They are not. Always order lipid panels separately when cardiovascular risk stratification or metabolic liver disease assessment is needed.