Test Details
Methodology
Enzyme immunoassay (EIA)
Result Turnaround Time
1 - 3 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Use
This test is used to confirm the diagnosis of Legionella pneumophila serogroup 1 infection.
Limitations
This test will not detect species or serogroups other than Legionella pneumophila serogroup 1.
References
Custom Additional Information
Legionella pneumophila has been estimated to cause 80% to 85% of Legionella infections, with serogroup 1 accounting for most of these. Current methods of diagnosis for Legionella infection include culture and DFA. All of these other tests require a high quality respiratory specimen to perform this test and, unfortunately, many patients with Legionella infection do not produce sputum. A number of investigators have shown that a specific soluble antigen was present in the urine of patients with Legionnaires' disease, which can be detected both early and late in the disease.
Specimen Requirements
Specimen
Urine
Volume
5 mL
Container
Sterile screw-cap container
Stability Requirements
| Temperature | Period |
| Refrigerated | Up to 14 days from collection (stability provided by manufacturer or literature reference) |
Reference Range
No Legionella pneumophila serogroup 1 antigen detected
Storage Instructions
Refrigerate.
Causes for Rejection
Swab specimen; inappropriate specimen transport device; unlabeled specimen or name discrepancy between specimen and request label; nonurine specimen
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 182246 | L. pneumophila Serogp 1 Ur Ag | 41499-5 | 182246 | L. pneumophila Serogp 1 Ur Ag | 41499-5 | |
| Order Code | 182246 | |||||
| Order Code Name | L. pneumophila Serogp 1 Ur Ag | |||||
| Order Loinc | 41499-5 | |||||
| Result Code | 182246 | |||||
| Result Code Name | L. pneumophila Serogp 1 Ur Ag | |||||
| UofM | ||||||
| Result LOINC | 41499-5 |