The results of a sputum culture can show: - Normal Flora: Indicates the presence of normal respiratory tract bacteria, which is usually not a cause for concern. - Pathogenic Organisms: The presence of bacteria or fungi that are known to cause infections. The lab will also perform a sensitivity test to determine the most effective antibiotics. - No Growth: No microorganisms were detected, which may suggest that the infection is not bacterial or fungal, or that the sample was not adequate.