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  • Title: Diagnostic efficacy of serum alkaline phosphatase and gamma-glutamyltransferase in dogs with histologically confirmed hepatobiliary disease: 270 cases (1980-1990).
    Author: Center SA, Slater MR, Manwarren T, Prymak K.
    Journal: J Am Vet Med Assoc; 1992 Oct 15; 201(8):1258-64. PubMed ID: 1358870.
    Abstract:
    The diagnostic efficacy of serum alkaline phosphatase (ALP) and gamma-glutamyltransferase (GGT) activities was examined, using the records of 270 dogs initially suspected of having hepatobiliary disease on the basis of history, findings on physical examination, results of baseline screening tests, or any combination of these data. Histologic examination of hepatic tissue was performed in each dog. Sixty-three dogs did not have histologic evidence of hepatobiliary disease and served as the control group. On the basis of diagnosis, dogs were assigned to 1 of 8 groups: dogs with cirrhosis (n = 34), steroid hepatopathy (n = 16), hepatic neoplasia (primary and secondary, n = 36), chronic hepatitis (n = 14), chronic passive congestion (n = 5), hepatic necrosis (n = 17), portosystemic vascular anomaly (n = 35), and cholestasis (extrahepatic bile-duct obstruction and intrahepatic cholestasis, n = 50). Of the 207 dogs with hepatobiliary disease, 29 (14%) had normal ALP and GGT activities, 31 (15%) had normal ALP activity, and 112 (54%) had normal GGT activity. Of the 63 control dogs, 29 (46%) had normal serum ALP and GGT activities, 32 had normal ALP activity (ALP specificity, 51%), and 55 had normal GGT activity (GGT specificity, 87%). The specificity of ALP and GGT in parallel (positive result = result of either test abnormal) was 46%, and in series (positive result = results of both tests abnormal) was 91%. The highest median activities of ALP developed in dogs with cholestasis, steroid hepatopathy, chronic hepatitis, and hepatic necrosis. The highest median activities of GGT developed in dogs with steroid hepatopathy, cholestasis, and hepatic necrosis.(ABSTRACT TRUNCATED AT 250 WORDS)
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