Legionella pneumophila Antibody (Type 1), IgM by IFA
0050273
 
Ordering Recommendation
Mnemonic
LEGAB1M
Methodology
Semi-Quantitative Indirect Fluorescent Antibody
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.  
Specimen Preparation
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.  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Contaminated, heat-inactivated, hemolyzed, severely lipemic specimens.  
Remarks
 
Stability
After separation from cells: Ambient: 48 hours; 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.
Note
CPT Code(s)
86713
Components
Component Test Code*Component Chart Name
0050273Legionella Pneumophila 1, IgM
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • L pneumophila IgM
  • L pneumophila Type 1 Ab
  • Legionella pneumophila IgM antibody
  • Legionnaires Disease Testing