Hello, as you know, we are simply other patients like you.
As to your questions, if I wanted to know, I would definitely call the clinic. My insurance has always covered all the tests ordered by pulmonology, but it may depend on youd policy - that is a question for your carrier.
Coordination - if your sample goes to Langone and they do not do the test you need, they ship it to NJH and the results are reported back to them. Mine take a circuitous route in my state - clinic lab to state dept of health lab (as mycobacteria can indicate TB which is a reportable public health risk) to NJH. And the results are eventually reported back to my doc and me on the patient portal. (This is not uncommon - few labs do every possible test anymore - many are routinely sent off to specialty labs. A few examples tissue biopsies certain cancers, risk panels that include metabolic tests for some illnesses.)