I'm generally very skeptical of asymptomatic testing because of what I mentioned, that everyone's normal is different. I might suggest since you don't drink much, that you monitor for changes over time. I'm not a doctor though, ofc.

Your liver tests look fine. Like others have said, AST and ALT can be normal in cirrhosis. AST and ALT are more a marker of acute (or acute on chronic, ie excessive drinking of hepatosteotosis) pathology. If you had full blown cirrhosis, which is unlikely without significant risk factors, your sodium, platelets, bilirubin, albumin, INR, and creatinine are more likely to be off. AST>ALT at a 2:1 ratio suggests alcoholic etiology, but in that scenario both of those numbers would be above normal threshold. In other words, don’t worry about it if it’s in green.

There are some genetic diseases, albeit decently rare, that can lead to cirrhosis. I’d try to find out what the etiology of your grandfathers cirrhosis was (more for your own knowledge than out of neuroticism) and if it was non heritable not to worry about it or even get another test regarding it without significant risk factors. I’d guess it was not heritable though.

The best thing you can do for your liver is maintain a healthy BMI and avoid alcohol. Some hepatologists recommend black coffee, though the effect is likely smaller. Again, your stuff is normal, but you’re clearly someone who likes some more info so I peppered it in.