ARUP's Laboratory Test Directory
| 0050273: Legionella pneumophila Antibody (Type 1), IgM by IFA |
| Test Mnemonic: LEGAB1M | |
|
Methodology: Indirect Fluorescent Antibody
Performed: Mon-Fri Reported: 1-4 days |
| Specimen Required: | |
|
Collect: One 4 mL SST.
Transport: 1 mL serum at 2-8°C. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 0.15 mL serum at 2-8°C. Remarks: Separate serum from cell ASAP. Acute and convalescent specimens must be labeled as such; parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Please mark specimen plainly as "acute" or "convalescent." Unacceptable Conditions: Severely lipemic, contaminated, heat-inactivated, or hemolyzed specimens. Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles) |
|
| Reference Interval: |
| < 1:16 |
| Interpretive Data: | |
|
IgM antibody to Legionella pneumophila Type 1 is measured using an IgM specific conjugate. It is recommended that the IgM test always be performed in conjunction with IgG antibody test. The IgM response to Legionella tends to develop concurrently with the IgG response and may remain elevated as long as the IgG response remains elevated. Cross-reactions have been described with several species of bacteria and Mycoplasma. |
| CPT Code(s): | |
| 86713 |