The normal range of values for AST (SGOT) is from 5 to 40 units per liter of serum (the liquid part of the blood). The normal range of values for ALT (SGPT) is from 7 to 56 units per liter of serum. Just because your husbands is significantly higher does not mean he has liver damage. Here are some things that could affect the readings. Pain relief medications such as aspirin, acetaminophen (Tylenol), ibuprofen (Advil, Motrin), neproxen (Narosyn), diclofenac (Voltaren), and phenybutazone (Butazolidine) Anti-seizure medications such as phenytoin (Dilantin), valproic acid, carbamazepine (Tegretol), and phenobarbital Antibiotics such as the tetracyclines, sulfonamides, isoniazid (INH), sulfamethoxazole, trimethoprim, nitrofurantoin, etc. Cholesterol lowering drugs such as the "statins" (Mevacor, Pravachol, Lipitor, etc.) and niacin Cardiovascular drugs such as amiodarone (Cordarone), hydralazine, quinidine, etc. Anti-depressant drugs of the tricyclic type If the readings are acurate here are some reasons this could be. diabetes mellitus and obesity acute viral hepatitis chronic hepatitis C infection Hemachromatosis cancer and the list goes on. Here is a good web site with some sound info on elevated enzymes. http://www.medicinenet.com/liver_blood_tests/article.htm