Patients must bring sputum samples on consecutive days.

Treatment is continued until TB bacteria can no longer be found in two sputum samples taken a month apart.

The best sputum samples contain very little saliva, as this contaminates the sample with oral bacteria.

I said I'd do it, and I want to get some sputum samples for analysis to make sure he hasn't got a chest infection.

It was first isolated from water, soil and one human sputum sample in Spain.

Blood tests and sputum samples came back positive for incurable small cell lung cancer.

Moreover, sputum samples might be less frequently obtained in the elderly.

This is based on studies using sputum samples and intensive care patients, in whom these bacteria were commonly found.

If lung cancer is suspected, a sputum sample and a biopsy may be taken.

First isolated from water samples, from soil and human sputum samples in Spain.