 Twelve slides from each sputum sample will be labeled with CyPath. One slide will be used to preform PAP staining for the presence of macrophages. Macrophages are an indication that the sputum sample is from deep within the lungs. A cytopathologist will review the slide and record results on a specimen adequacy form. bioAffinity researchers who will be blinded as to the Participants identity will perform the CyPath labeling and scoring of the slides. The study results of the healthy cohort will be used for comparison with the results of a closed study in which the sputum from individuals at high risk of lung cancer and individuals diagnosed with lung cancer was compared. 