I get my blood tested every month because I am on a statin for my cholesterol. The doc has them run a liver panel, a CPK, the lipid panel, a kidney function test and a few others that I don't really care about.
Insurance covers it all and there has never been any mention of gear.
So, if you can come up with another reason to get things tested (you say your grandmother died of liver disease and you want to make sure you monitor your's) then you could be fine and it could be free.