A sputum stain for Mycobacteria is a laboratory test performed on a sample of your sputum, or phlegm. It’s also known as an acid-fast bacillus (AFB) stain or a tuberculosis (TB) smear. A doctor ...

A sputum culture is a sample of the gooey substance that often comes up from your chest when you have an infection in your lungs or airways. It is mostly made up of white blood cells that fight ...

Lung cancer is the leading cause of cancer mortality rate worldwide, mainly because of the presence of metastatic disease at the time of diagnosis. Early detection of lung cancer improves prognosis, ...

When you have a respiratory tract infection or a lung-related disorder, your lungs produce a thick substance known as sputum. This substance can make it hard to breathe, cause coughing, and harbor ...