Legionella pneumophila Antibody

CPT: 86713
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Test Details

Test Includes

Serogroups 1 to 6


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.


Enzyme-linked immunosorbent assay (ELISA)

Reference Interval

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.

Specimen Requirements




0.4 mL

Minimum Volume

0.2 mL


Red-top tube or gel-barrier tube

Storage Instructions

Maintain specimen at room temperature.

Causes for Rejection

Hemolysis; lipemia; gross bacterial contamination

Clinical Information

Special Instructions

Send paired serum samples, one during the acute stage, and the second, three to six weeks later, during the convalescent stage.


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
164616 Legionella pneumophila Abs. 30046-7 164618 Legionella pneumophila Abs. OD ratio 30046-7

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CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2018, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf