 Meso Tetra 4-Carboxyphenyl Porphine TCPP is a porphyrin that can label cancer cells by reacting to the increased number of low-density lipoproteins coating the surface of cancer cells and the porous nature of the cancer cell membrane, causing the cell to fluoresce under specific wavelengths of light. The primary objective of this clinical trial is to determine the the presence or absence of red fluorescent ie, cancer cells RFCs from deep-lung sputum samples using the CyPath Early Lung Cancer Detection Assay from one cohort of Participants who are healthy. The results from this trial will be compared with two additional cohorts of Participants including individuals at high risk for lung cancer and individuals diagnosed with lung cancer. Collection of the sputum samples from high-risk individuals and lung cancer patients is complete NCT00894127. 