The doctors do certain blood tests to check the liver: (1) The blood liver" enzymes "will show the doctor if there may be damage to the liver cells (2) the blood liver "function" tests will show the doctor how well the liver cells are functioning to do the job they need to to keep the body well (3) The blood "viral "testing to see if a virus has entered the body and has gone to the liver cells and used them to reproduce themselves. No one blood test is 100% accurate. The doctor may do the same tests again to be sure of this...as different things can affect the tests results. If he thinks it is a problem with your liver, he may exam you: he will place his hand in the upper right portion of your abdomen, just under the rib cage and see if he can feel if the liver is enlarged in size. An enlarged liver means that there may be inflammation in the liver that can be caused by a number of different things. If the cause can be found and the inflammation is treated, the liver cells can heal. It is a matter of whether you truly have a liver problem, what the cause is, whether inflammation has developed from the cause, and if the doctor can treat it. It will only become dangerous if there is so much damage to the liver cells that they start to die off... then it is serious...a disease known as Cirrhosis. Some of the causes of liver problems are: alcohol consumption, medication toxification, chemical exposure, fatty liver disease, poison mushroom eatting, hereditary condition, biliary obstruction or malformation, auto immune disease and there are others. I would wait and see what the doctor has to say. Some of the enzyme tests are not just specific to the liver itself and it depends on which ones are elevated to determine this, as some liver enzymes can rise if someone exercised before having the blood testing done. That is just one example. Hope this information is of some help to you.