Legionnaires' disease is similar to other types of pneumonia. To help identify the presence of legionella bacteria quickly, your doctor may use a test that checks your urine for legionella antigens — foreign substances that trigger an immune system response. You may also have one or more of the following:
- Blood tests
- Chest X-ray, which doesn't confirm legionnaires' disease but can show the extent of infection in your lungs
- Tests on a sample of your sputum or lung tissue
- A CT scan of your brain or a spinal tap (lumbar puncture) if you have neurological symptoms such as confusion or trouble concentrating
Aug. 02, 2017
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- Legionella (Legionnaires' disease and Pontiac fever). Centers for Disease Control and Prevention. http://www.cdc.gov/legionella/index.html. Accessed March 22, 2016.
- Longo DL, et al., eds. Legionella infections. In: Harrison's Principles of Internal Medicine. 19th ed. New York, N.Y.: McGraw-Hill Education; 2015. http://accessmedicine.com. Accessed March 23, 2016.
- Yu VL, et al. Clinical manifestations and diagnosis of legionella infection. http://www.uptodate.com/home. Accessed March 23, 2016.
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- Yu VL, et al. Treatment and prevention of legionella infection. http://www.uptodate.com/home. Accessed March 23, 2016.