Why the test is performed
To identify bacteria or fungi that may be causing a lower respiratory infection.
World time
Laboratory Testing Online / Microbiology
Sputum Culture
To identify bacteria or fungi that may be causing a lower respiratory infection.Test profileMISputum Culture
Test and specimen
What is being examined?
- Test
- Sputum Culture
- Department
- Microbiology
- Typical sample or measurement
- Deep-cough sputum, not saliva
Before the test
An early-morning deep-cough sample may be requested. Rinse the mouth with water and follow infection-control instructions.
Clinical interpretation
Laboratory results should be interpreted by a qualified professional using the correct reference interval, method, symptoms, history and other findings. A normal or abnormal value rarely confirms or excludes a condition by itself.
What the test is used for
Investigating pneumonia, chronic lung-disease exacerbation, bronchiectasis or selected tuberculosis pathways.
How the test is performed
Specimen quality is checked, then microscopy and culture are performed; organisms may be identified and susceptibility tested.
Conditions and diseases considered
Used in bacterial or fungal lung infection and some mycobacterial investigations, depending on laboratory scope.
Recommended further tests
Chest imaging, respiratory PCR, blood culture, TB NAAT/smear/culture or pulmonary review.
Primary public reference
Continue with the official patient guide.
COHSEW has summarised this information for navigation and awareness. Follow the source and your healthcare provider’s current instructions for the complete context.
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