|CERNER / EPIC MNEMONIC:||
The Legionella Urinary Antigen test is an in vitro rapid immunochromatographic assay for the qualitative detection of Legionella pneumophila serogroup 1 antigen
Daily, 24 hours
Sterile screw cap or boric acid tube
collect using aseptic technique
urine, first void preferred
specimen received in a preservative other than boric acid, insufficient specimen volume
Specimen should be transported as soon as possible. Specimen may be stored at room temperature for 24 hours. If a longer delay is expected specimen may be refrigerated for up to 14 days.
|LIMITATIONS OF TEST:||
This test will not detect infections caused by other Legionella pneumophila serogroups and by other Legionella species. A negative antigen result does not exclude infection with Legionella pneumophila serogroup 1. Culture is recommended for suspected pneumonia to detect causative agents other than Legionella pneumophila serogroup 1 and to recover Legionella pneumophila serogroup 1 when antigen is not detected in urine.
The detection of Legionella pneumophila serogroup 1 antigenuria by EIA is highly sensitive and specific. Excretion of Legionella antigen in urine may vary depending on the individual patient. Antigen excretion may begin as early as 3 days after onset of symptons and persist for up to 1 year afterwards. A positive result can occur due to current or past infection and therefore is not definitive for infection without other supporting evidence.
|TEST SYNONYM(S):||Legionnaires Disease|