Walmart with these Quick Labs could do all kinds of tests on site.They have eye doctors on site,I asked different friends about best place to buy eye glasses Walmart came up,I wasn't looking for discounts and I needed a eye check up. A+ eye glasses excellent eye Dr.A hearing aid lab,I get all my blood tests at Quest Labs, twice a yr.Florida Blue I get all blood tests for no charge.Walmart is cutting edge in a lot of ways,capitalism at its best.I think we are going to be very surprised here very shortly!!!!!