Background: Hemoptysis is defined as the expectoration of blood, alone or mixed with mucus, from the lower respiratory tract. Hence; the present study was conducted for assessing patients with active hemoptysis in a tertiary care teaching hospital at Lucknow, India. Materials & methods: 200 patients who had been admitted to the OPD or casualty with complaints of active hemoptysis made up the study population. Radiological tests like X-rays and CT thorax were performed. It was determined how much of the lungs were affected. The sputum test comprised Ziehl-Neelsen staining. From the afflicted area, bronchial brushing or bronchoalveolar lavage (BAL) fluid was collected and sent for cytology and microbiological analysis. The amount of bleeding varies from a mild to moderate and massive hemoptysis. After then, the etiological diagnosis was recorded. Results: 50.50 percent of the cases were of tuberculosis. 24 percent of the patients were of bronchiectasis, while 6.5 percent of the patients were malignancy. Pneumonia was present in 5.5 percent of the patients. Among tuberculosis patients, 56 patients, 32 patients and 13 patients had mild, moderate and massive hemoptysis. Among bronchiectasis patients, 29 patients, 15 patients and 4 patients had mild, moderate and massive hemoptysis. Among malignancy patients, 5 patients, 6 patients and 2 patients had mild, moderate and massive hemoptysis. Conclusion: The diagnostic evaluation of patients with active hemoptysis remains focused on the localization of the bleeding site and underlying cause.