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Test Code LEGI Legionella pneumophila Antibody

Performing Laboratory

LabCorp Burlington, NC


Enzyme-linked immunosorbent assay (ELISA)


TAT: 2 - 6 Days

Reference Values

Negative         <0.91

Equivocal  0.91 - 1.09

Positive        >1.09


This assay detects IgG/IgM/IgA antibodies to

L. pneumophila Groups 1-6 by the EIA method.

The positive cutoff has been set to the equivalent for an IFA titer of 1:256. If only one specimen is submitted, a positive is presumptive supporting evidence of exposure.

Test Classification and CPT Coding



LOINC Code: 30046-7

Specimen Requirements

Container/Tube:  Red Top Tube or Gold Top Tube

Specimen: 04 mL serum ( 0.2 mL min)

Transport Temperature: Room Temperature

Rejection: Hemolysis; lipemia; gross bacterial contamination


Computer Interface Code

PDM #  5900900

Used For

This system tests for L pneumophila serogroups 1 through 6. It does not test for nonpneumophila, or atypical, Legionella species. A diagnosis should not be made on the basis of anti-Legionella serology results alone; test results should be interpreted in conjunction with the clinical evaluation and other diagnostic procedures.