In my own case I've had consistently elevated liver enzymes - a "fatty liver" - for several years before I quit drinking. After I quit the booze, my levels fell to within normal levels within weeks. http://www.soberrecovery.com/forums/...ml#post2361029
There were no apparent symptoms but I understood the potential risk of allowing such a condition to go unchecked ... that is to suddenly progress to a cirrhotic liver, for example.
There are good reliable information sites provided by the trusted providers like the Mayo Clinic and the National Institutes of Health (NIH) that can provide some good background information to compliment your visit to your doctor. At some point in one's life, it makes sense to start "getting fluent" about all the various metrics that need monitoring as we age -- cholesterol levels, triglycerides, liver function, blood pressure, etc.
I am overseas and stationed in a country with a nationalized medical service, where due to resource constraints on treating each patient many physicians simply will not take the time to provide a complete A to Z explanation of the significance of the various liver function tests. (In such a situation - "go see your doctor" might not necessarily provide the complete answers you are seeking).
As others have indicated, you really need come clean about your drinking with your physician - and your willingness to quit drinking if necessary. One of my relatives - a physician who administered the blood work and tests never once advocated quitting the booze - only "cutting back". I finally had to ask him why? (not just to me but to almost all his patients with similar conditions). He indicated he thought getting a patient to quit drinking altogether was a near impossible recommendation for them to follow, so he was advocating 'the next best thing'.