Essential functions of the position include but are not limited to: Performs routine tests (spirometry, lung volumes, diffusing capacity, airway pressures, bronchodilator evaluation, induced sputum), specialized tests (exercise tests, arterial sampling, methacholine challenge studies, shunt studies, high altitude simulation studies), research protocols, performs and monitors quality controls. Shows initiative in development and implementation of new procedures; contributes in assessment of current techniques or does a project which directly benefits Pulmonary Diagnostics Services, Penn Medicine Chester County Hospital or general patient care.