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- Legionella Antigen
- FA Smear for Legionella pneumophila
Determine the presence of Legionella pneumophila organisms in direct FA smear of specimen, providing rapid diagnosis
Test does not include Legionella species other than L pneumophila.
Direct fluorescent antibody (DFA)
No Legionella pneumophila detected
Community-acquired and nosocomial infections caused by multiple serogroups of Legionella are increasingly recognized. Although culture is now possible on buffered charcoal yeast extract agar, the demonstration of organisms in tissue or brushings is the fastest way to make the diagnosis. It also has the advantage of applicability to specimens contaminated with other bacteria. Development of monoclonal antibodies have increased sensitivity and specificity. False-positive reaction has been reported in a case of pleuropulmonary tularemia and in cases of Campylobacter infection.
Lung biopsy, lung exudate, pleural fluid, transtracheal aspirate, sputum, bronchial washing
1 mL lung exudate or 1 cc lung biopsy
Contamination with normal flora from skin or other body surfaces should be avoided.
Refrigerate. Maintain specimen 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)
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|085506||Legionella pneumophila DFA||588-4||085506||Legionella pneumophila DFA||588-4|