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Test Code LEGU Legionella Antigen, Urine

Additional Codes

Sunrise Clinical Manager (SCM) Orderable:   Legionella Pneumophila Antigen, Urine

AllScripts (AEHR) Orderable:  Legionella Pneumophila Antigen, Urine

Performing Laboratory

Northwell Health Laboratories


Immunochromatographic Membrane Assay

Reference Values


Interpretive Data



Presumptive detection of L. pneumophila serogroup 1 antigen in urine, suggesting recent or current infection. Order “Culture –Legionella” as recommended to confirm infection.


Negative :

L. pneumophila serogroup 1 antigen in urine NOT detected, suggesting NO recent or current infection. Infection due to Legionella cannot be ruled out: other serogroups or species may cause disease, antigen may not be present in urine in early infection, or the level of antigens in urine may be below the detection limit of the test. Order “Culture –Legionella” recommended for uncommon cases of suspected Legionella pneumonia due to organisms other than L. pneumophila serogroup 1.

Test Classification and CPT Coding


Specimen Requirements

Container/Tube: Urine container

Specimen: 10 mL from a random urine collection(3 mL min).  No preservative.

Transport Temperature: Refrigerated

Day(s) and Time(s) Performed

Monday through Sunday

Useful For

As an adjunct to culture for the presumptive diagnosis of past or current Legionnaires disease (Legionella pneumophila serogroup 1)

Computer Interface Code

PDM # 5900908