Laboratory evaluation of XXXX .

@entity66 @entity3265 @entity648 @entity409 @entity534 @entity3645 @entity413 @entity165
With respect to @entity409 , the primary function of the laboratory is to identify its presence. Tests are not available that permit a specific diagnosis and an accurate prognosis. Several tests should be present in a minimum data base that can help identify @entity66 . They are ALT, SAP, total serum @entity648 , urine @entity648 , @entity165 , albumin, BUN, @entity413 , red cell morphology, and urine sediment. It is sometimes possible to tentatively identify whether a disease is primarily hepatocellular or biliary from the pattern of changes that occur in these tests. In addition, an estimate of the severity is sometimes possible when abnormal values are extreme. The keys are to avoid overinterpretation, use serial evaluations, and rely on a liver biopsy when definitive answers are needed. If @entity409 is suspected but there are only marginal changes in the routine tests, the more sensitive tests of function, BSP retention and @entity3265 tolerance, are warranted. In the future, as more knowledge is gained about the responses of @entity534 , GGT, and ICG retention to naturally occurring diseases, these tests may join or replace some of those currently used. Also, as the ability to accurately and economically measure the various @entity3645 improves, a sensitive, yet noninvasive, method to detect and define modest changes in hepatobiliary function may result.
