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PubMed1999

Special considerations in interpreting liver function tests.

A number of pitfalls can be encountered in the interpretation of common blood liver function tests. These tests can be normal in patients with chronic hepatitis or cirrhosis. The normal range for aminotransferase levels is slightly higher in males, nonwhites and obese persons. Severe alcoholic hepatitis is sometimes confused with cholecystitis or cholangitis. Conversely, patients who present soon after passing common bile duct stones can be misdiagnosed with acute hepatitis because aminotransferase levels often rise immediately, but alkaline phosphatase and gamma-glutamyltransferase levels do not become elevated for several days. Asymptomatic patients with isolated, mild elevation of either the unconjugated bilirubin or the gamma-glutamyltransferase value usually do not have liver disease and generally do not require extensive evaluation. Overall hepatic function can be assessed by applying the values for albumin, bilirubin and prothrombin time in the modified Child-Turcotte grading system.

Alanine Transaminase↗
PubMed1998

Disulfiram use in patients with abnormal liver function test results.

BACKGROUND: Concern about the precipitation of severe hepatitis by disulfiram often causes clinicians to avoid using this effective treatment in patients who have elevated baseline transaminase levels, even though no empirical evidence has so far shown severe hepatotoxicity to be related to such laboratory abnormalities. This study examines the effects of disulfiram in alcohol-dependent patients with elevated liver function test results and/or serologic evidence of hepatitis C virus (HCV) infection. METHOD: Hepatitis serologies and baseline transaminase levels were obtained for 57 male alcoholics starting treatment with disulfiram. Sequential liver function test results were obtained for up to 12 weeks while subjects took disulfiram. RESULTS: Although subjects with elevated baseline transaminase levels and serologic evidence of HCV infection were the most likely to evidence marked elevations in transaminase levels while taking disulfiram, most subjects took disulfiram without other adverse consequences. In only 1 subject did elevations appear directly related to disulfiram. CONCLUSION: Monitoring of liver function test results is warranted for patients taking disulfiram and permits most patients with moderately elevated transaminase levels to take it safely.

Adult↗
PubMed1992

[Effect of ursodeoxycholic acid (UDCA) therapy for compensatory liver cirrhosis on liver function tests and serum bile acid metabolism].

Effect of ursodeoxycholic acid (600 mg/day 12 weeks) on liver function tests and bile acid metabolism were investigated in 6 patients with compensatory liver cirrhosis (CLC) and 6 with chronic active hepatitis (CAH). Serial determination of serum GOT, GPT and gamma-GTP after the initiation of UDCA revealed significant reduction in mean levels of these enzymes after 4 weeks, and further improvement was observed at the end of the 12-weeks treatment regimen (CLC: 79.3%, 81.1%, 51.5% of initial values, respectively, CAH: 61.2%, 59.3%, 42.8%). On the other hand, after UDCA administration, serum total bile acid increased and UDCA became the predominant bile acid in CLC and CAH patients. Other endogenous bile acids decreased in both groups, but reduction rate of serum chenodeoxycholic acid level in CLC was smaller than that in CAH group (CLC: 86.1% of initial values, respectively, CAH: 54.2%). During UDCA treatment, apparent side effect was not observed. We suggest that UDCA administration might constitute effective treatment for compensatory liver cirrhosis as well as chronic hepatitis.

Adult↗
PubMed2000

Abnormal findings on liver function tests. Interpreting results to narrow the diagnosis and establish a prognosis.

Evaluating abnormal liver test results requires careful attention to the corresponding clinical data obtained during history taking and physical examination. Generally, it is helpful to separate liver tests into three categories: tests that assess synthetic function, tests that assess hepatocellular necrosis (hepatocellular enzymes), and tests that assess cholestasis. The clinical setting together with the specific pattern of liver function abnormalities can narrow differential diagnosis and provide a cost-effective approach to assessing patients and identifying those who need liver biopsy.

Alanine Transaminase↗