What question did this study set out to answer?

To evaluate the sensitivity and specificity of various serum enzymes and their ratios in diagnosing and differentiating hepatocellular injury from extrahepatic biliary obstruction.

January 12, 1971Acta Medica Scandinavica

The Diagnosis of Hepatobiliary Diseases by Serum Enzyme Analyses

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Authors

AKAarne KonttinenKarolinska University Hospital VHVeikko HupliUniversity of Helsinki KSKari SalmenkiviUniversity of Helsinki

Discussion

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Implication

Comparative study reveals differential serum enzyme profiles across hepatobiliary disorders, indicating that enzyme ratios improve differentiation between hepatocellular and obstructive jaundice.

Key Points

To evaluate the sensitivity and specificity of various serum enzymes and their ratios in diagnosing and differentiating hepatocellular injury from extrahepatic biliary obstruction.
Measured serum activity levels of guanase, gamma-glutamyl transpeptidase (γ-GT), ornithine carbamoyl transferase (OCT), and alkaline phosphatase in patients with hepatobiliary diseases.
Assessed diagnostic accuracy across clinical presentations including hepatitis, cirrhosis, and extrahepatic jaundice, and calculated the serum guanase to alkaline phosphatase ratio.
Serum γ-GT demonstrated the highest sensitivity across patients, including anicteric individuals, and showed marked elevation in extrahepatic biliary obstruction.
Serum OCT activity exhibited the highest specificity for detecting liver tissue damage in hepatitis and extrahepatic jaundice, whereas serum guanase lacked sensitivity for extrahepatic jaundice and cirrhosis.
The ratio of serum guanase to alkaline phosphatase provided the most effective differentiation between hepatocellular jaundice and extrahepatic obstruction, though misdiagnosis occurred in approximately 10% of cases.

Cite This Study

Konttinen et al. (1971) studied this question.

synapsesocial.com/papers/6a93d1df219df916ad43d7a9 https://doi.org/10.1111/j.0954-6820.1971.tb04417.x

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Implication

Comparative study reveals differential serum enzyme profiles across hepatobiliary disorders, indicating that enzyme ratios improve differentiation between hepatocellular and obstructive jaundice.