The sample was assessed by one of three laboratory staff, and the macroscopic appearance of the majority of the sample was allocated a sputum number by reference to a standard color chart.

Sputum colour: a useful clinical tool in non-cystic fibrosis bronchiectasis. Murray et al, Eur Respir J 2009, DOI: 10.1183/09031936.00163208 Colour of phlegm can predict outcomes for patients with ...

The mucus in your nose serves many functions. Its colour can tell you and your doctor a lot about what’s going on in your body. While this is not enough to diagnose anything outright ...