NEW YORK (Reuters Health) - Confirming widespread beliefs by doctors and parents alike, the color of phlegm coughed up by people is indeed a good indicator of whether that person has a bacterial ...

Mucus isn't exactly something people give much thought to — until they're sick and dealing with a constantly runny nose. But mucus is actually an important part of a healthy immune system, according ...

Withholding antibiotic treatment from hospitalized chronic obstructive lung disease (COPD) patients with nonpurulent sputum does not negatively affect outcomes, a pilot study shows. The authors say ...

If you’re blowing your nose regularly, it’s hard not to notice your mucus—and what color it is. So it can also be alarming if you happen to spot yellow, brown, bloody, or green mucus in your used ...

Medically reviewed by Amelia MacIntyre, DO Smoking can lead to brown mucus due to tar build-up in the lungs. Inhaling pollutants and toxins can cause brown mucus. Lung infections from bacteria and ...

What is a sputum Gram’s stain? A sputum Gram’s stain is a laboratory test that allows your doctor to diagnose a bacterial infection in your respiratory tract. They may order it if you have symptoms of ...

This is a preview. Log in through your library . Abstract We examined the risk factors for bacterial exacerbation, defined as the presence of pathogenic bacteria in sputum, in 90 chronic obstructive ...