<prompt> Monu, a 30 year old male, a chronic alcoholic presents with sudden onset of epigastric pain that radiates to the back. All are seen EXCEPT :Low serum lipaseIncreased LDHHypocalcemiaIncreased serum amylase  <response>: Ans. is a ie. low serum lipase This pt. is suffering from acute pancreatitis. In acute pancreatitis serum lipase level is elevated. In fact the diagnosis of acute pancreatitis is usually confirmed by an elevated level of serum amylase andor lipase.Another lab test used to diagnose acute pancreatitis is - serum trypsin level it has theoretical advantage over amylase and lipase determinations in that the pancreas is the only organ that contains this enzyme.In acute pancreatitisSerum amylase level is increased many foldSerum LDH level are elevated and markedly elevated levels suggest a poor prognosis.Hypocalcemia is seen in about 25 of pts. and is thought to be due to intraperitoneal saponification of calcium by fatty acids in areas of fat necrosis. 