A nurse is working with a provider to determine which laboratory tests should be ordered for a client who is suspected of chronic alcohol use. The nurse should identify that which of the following sets of laboratory data might indicate chronic alcohol use ________.
1) Elevated gamma-glutamyl transferase (GGT) levels
2) Decreased mean corpuscular volume (MCV)
3) Elevated aspartate aminotransferase (AST) levels
4) Elevated alanine aminotransferase (ALT) levels