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Send suspicious sputum for...
- - microscopy (Gram stain and auramine/ZN stain, if indicated)
- - culture
- - cytology
Black carbon specks
suggests smoking, most common caused of increased sputum production
-> infection e.g. bronchiectasis, pneumonia
Pink frothy sputum
Bloody sputum (haemoptysis)
- may be due to
- malignancy, TB, infection or trauma ( requiring investigations)