May be useful when acute legionellosis is suspected; however, Legionella pneumophila Antigen, Urine (0070322) is preferred.
Semi-Quantitative Indirect Fluorescent Antibody
New York DOH Approval Status
Serum separator tube.
Separate serum from cell ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.1 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as acute or convalescent.
Contaminated, heat-inactivated, hemolyzed, or severely lipemic specimens.
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
IgM antibody to Legionella pneumophila serotypes 1-6 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.
|Component Test Code*||Component Chart Name||LOINC|
|0050274||Legionella Pneumophila 1-6,IgM||16133-1|
- L pneumophila IgM
- L pneumophila Types 1-6 Ab
- Legionella pneumophila IgM antibody
- Legionnaires Disease Testing