Ordering Recommendation
May aid in the diagnosis of legionellosis caused by infection with L. pneumophila.
Mnemonic
LEGION AB
Methodology
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed
Mon-Fri
Reported
1-4 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect
Serum separator tube (SST) or plain red.
Specimen Preparation
Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.3 mL)
Storage/Transport Temperature
Preferred transport temp: Refrigerated. Also acceptable: Frozen
Unacceptable Conditions
Contaminated, heat-inactivated, hemolyzed, icteric, or lipemic specimens.
Remarks
Stability
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 month
Reference Interval
≤0.90 IV | Negative: No significant amount of IgG/IgM/IgA antibodies to L. pneumophila detected. |
0.91 to 1.09 IV | Equivocal: Recommend repeat testing in 1-3 weeks with fresh sample. |
≥1.10 IV | Positive - IgG/IgM/IgA antibodies specific to L. pneumophila suggesting current or prior infection. A positive result cannot distinguish between previous or active infection, therefore this result alone cannot be used to establish a diagnosis. |
Interpretive Data
Compliance Category
FDA
Note
Hotline History
Hotline History
Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
N/A
CPT Codes
86713
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
3005201 | L. pneumophila (Types 1-6), Antibodies | 30046-7 |
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
- Legionnaire's disease, legionellosis
Legionella pneumophila Antibodies (Types 1-6), IgG, IgM, and IgA by ELISA