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Lab Manual for Moffitt-Long and Mount Zion

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Legionella pneumophila urinary antigen

Item Value
Approval req'd? No
Available Stat? No
Test code LEGAU
Test group Legionella
Performed by Quest
Sendout? Yes
Method EIA
Container type Urine cup
Amount to Collect 10 mL
Sample type Random urine
Preferred volume 1 mL urine
Min. Volume 0.5 mL urine
Processing notes Order Quest test # 8856
Normal range Negative
Synonyms Legionnaires disease
Stability Room temperature 8 hours, refrigerated 2 weeks, frozen at -20C 1 month.
Turn around times Set up 5 days per week. Turnaround time 4-6 days.
Additional information Legionella pneumophila serogroup 1 antigen can be detected in urine within 2-3 days of infection and may persist even after treatment.

Only a small portion of Legionella infections are due to serogroup 1. This assay does not detect other Legionella species or serogroups. Therefore a negative test cannot be used to exclude infection.

Regardless of whether a urine antigen test is used, culture of respiratory specimen should always be performed because culture diagnosis continues to be the most sensitive and specific means to diagnose Legionnaire's Disease
CPT coding 87449-90
Last Updated 3/24/2013 7:50:32 PM
Entry Number 601

If you have additional questions regarding this test, please call: 415-353-1667

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