Honestly, I don't think you're going to find a local lab for oil analysis (but heck, I could be wrong). Why not use Butler Labs or Blackstone Labs? I'm very pleased with the service from Blackstone.
For $20 you can't expect super precision but both labs are OK for talking to you most about the state of your engine and secondarily the state of the oil - if you are willing to study trends and compare similar engines in similar conditions.
I think our company mechanics get the UOA's for our heavy equipment done at Ziegler Incorporated off of 94th and I35W in Bloomington (I may be wrong). I'll ask when I see the boys again. I just send mine to Blackstone.