I got my health certificate this morning. I drank a little wine last night. Does it have a big impact?

Yes, it may affect the results of liver function test. It's best to wait two days before checking, and drink plenty of water to promote metabolism.

If you are not in a hurry or just have a little beer, you can do it in the afternoon. If you drink liquor with high alcohol content, I suggest you drink it in a couple of days.