Pulmonary Function Test (PFT) with Diffusing Capacity of the Lung for Carbon Monoxide (DLCO) measures how well oxygen is transferred from the lungs to the bloodstream. Dr. Mayank often uses this test to evaluate the effectiveness of the lungs in gas exchange, particularly in conditions like interstitial lung disease and emphysema. The DLCO test helps assess the degree of lung damage and aids in diagnosing diseases that affect the lungs’ ability to absorb oxygen.