Legionella species Culture
Also known as: Culture, Legionella sp
Use
Isolate and identify Legionella sp
Special Instructions
Not provided.
Limitations
This culture test's sensitivity ranges from 50% to 80%, though its specificity is 100%. Sputum and bronchial aspirates may suffer from bacterial overgrowth, decreasing the test's effectiveness. A direct fluorescent antibody smear without culture can alternatively detect Legionella, and acute and convalescent sera for Legionella antibodies might be required to maximize diagnostic accuracy. However, seroconversion, a critical diagnostic criterion, may take time to manifest, with only 71% detection at 28 days post-onset. Environmental factors in hospitals can also influence transmission.
Methodology
Culture-based
Biomarkers
Legionella sp
Microorganism
LOINC Codes
- 88585-5 - Legionella Lower resp Cult
- 88585-5 - Legionella Lower resp Cult
Result Turnaround Time
7-16 days
Related Documents
For more information, please review the documents below
Specimen
Other
Volume
1 mL lung exudate or 1 cc lung biopsy
Minimum Volume
Not provided
Container
Sterile container
Collection Instructions
Contamination with normal flora from respiratory tract should be avoided. Transport to the laboratory within 24 hours of collection.
Storage Instructions
Refrigerate. Maintain specimens at 2°C to 8°C and transport to the laboratory within 24 hours of collection.
Causes for Rejection
Swab specimen; inappropriate specimen transport device; improper labeling; specimen received after prolonged delay (usually more than 72 hours); specimen received in expired transport; environmental water samples such as air conditioning/cooling towers
Other tests from different labs that may be relevant