Tube testing service

Today’s digest included a post about tube testers and it was targeted toward audiophiles who want to purchase a tube testing device. For those of us who don’t want to buy the gear, where can we get tubes tested, as a service?

 I’m running KT120s and in the St. Louis area and I suspect that matters. 

I would check for dealers in the St Louis area who sell tubed equipment. They should have a tube tester handy.
Thanks. I'm unsure which local providers are tube equipment resellers. Anyone in the local area have recommendations?