Abstract: A device (100) is disclosed for obtaining a breath sample from a patient, The device comprises a mask or mouthpiece (101) for receiving breath from a patient; an outlet (102) through which breath is exhausted from the device (100); a sampler (110); and a sample container (113). The sampler (110) comprises a distal portion configured to protrude into a flow of breath from the mask or mouthpiece (101), and a sampler opening (118) in the distal portion for obtaining a breath sample. The sample container (113) is in communication with the sampler (110) for receiving the breath sample from the sampler (110).