Liver alone do not give the physician full

Liver function tests are blood test that can provide information about how liver is working.This test is performed on a blood sample.Most liver diseases cause only mild symptoms initially, but it is vital that these diseases be detected early.LFT examines proteins,enzymes and other substances that indicate how well liver is working.They can show if there is a damage to liver cells or a blockage near the liver.A number of conditions are indicative of liver disease including jaundice,portal hypertension,disordered hemostasis and the release of enzymes into various body fluids.Assesment of liver function;*.plasma proteins       -AST       -ALT       -Alkaline phosphate       -Gamma glutamyltransferase       -Lactate  dehydrogenase*.Plasma albumin*.Prothrombin time*.serum bilirubinLFTs are done,-to diagnose liver disordes with suggestive symptomes as jaundice.-to monitor the activity and severity of liver disorders-to asses the prognosis of liver disease and dysfunction-to monitor the therapy-as a routine precaution after starting certain medicines to check that they are not causing liver damage as a side effect.Each of LFT gives different information about liver function. The results alone do not give the physician full information,but used in combination with careful history,physical examination can contribute to making an accurate diagnosis of the specific liver disorder.?> Very high levels of ALT  is usually due to acute hepatitis,  often due to virus infection?> Moderate levels increase in ALT in chronic hepatitis, Obstruction of bile ducts,Cirrhosis &Tumors in the liver.?> Elevated levels of AST may indicateAcute liver damage,cirrhosis of the liver and hepatitisAcute hemolytic anemiaAcute renal failure or loss of kidney function.?> Alkaline phosphate levels are significantly higher in children and pregnant women. Increased alkaline phosphate activity in liver disease.?> Abnormal bilirubin can ve found in many disorders including;      Blocked bile duct     Cirrhosis     Hepatitis and other liver diseases     Immature liver development in newborns?> Gamma glutamyl transferase elevated levels are observed in   Chronic alcoholism  Pancreatic disease  Myocardial infraction  Renal failure  Chronic obstructive pulmonary diseases  Diabetes mellitus