We do other diagnostic testing in our office however that pays better than these labs. We do full PFT (not just spirometry), radial arterial elasticity/compliance testing with the CardioVascular Profiler, and autonomic nervous system testing with the Ansar ANX 3.0. These tests make a $hit load of money. I'd be happy to discuss, but in a new thread since these are not CLIA-waived lab tests. These are procedural tests (but don't require any special certifications to own).