Elevated liver enzymes may indicate inflammation or damage to cells in the liver. Inflamed or injured liver cells leak higher than normal amounts of certain chemicals, including liver enzymes, into the bloodstream, which can result in elevated liver enzymes on blood tests.
The specific elevated liver enzymes most commonly found are: Alanine transaminase (ALT) Aspartate transaminase (AST)
ELFTs, or Elevated Liver Function Tests, can be caused by a number of things. Tylenol overusage, certain other medications, being overweight, or drinking alcohol to excess can all cause ELFTs. It's not necessarily an early sign of liver cancer or cirrhosis. If your numbers were elevated enough for your doctor to be concerned, s/he would have ordered a liver biopsy. If you don't trust that your doctor would have done that, seek a second opinion.