The purpose of this research is to evaluate if including the investigational Nodify XL2 test results in the decision-making process when planning the management of lung nodules will reduce the number of unnecessary surgical and biopsy procedures. The general study procedures include obtaining blood samples for Nodify XL2 tests, collecting relevant medical information (including test results ordered by your doctor in the management of your lung nodule), and documenting your doctor's recommendations for the treatment of your lung nodule. Participation in this research study may last up to 18 months.