Legionella pneumophila Antibody Type 1, IgM by IFA

Sunquest Code:LPAGM  
Methodology:Indirect fluorescent antibody
CPT Code:86713
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported in 1-4 days.
Special Instructions:Parallel testing is preferred. Label samples as acute or convalescent. Convalescent specimens must be received within 30 days from receipt of the acute specimens.

Collection Instructions

Optimal Volume:2 mL
Minimum\Peds Volume:0.4 mL
Container:Red or gold (gel) (Red (no gel))
Causes for Rejection:Hemolyzed; lipemic

Processing and Shipping

Specimen Processing:Separate serum from cells ASAP. Centrifuge and aliquot 1 mL, 0.1 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:50273 (LEGAB1M)


Reference Range:Less than 1:16 No antibody detected.
Use:IgM antibody to Legionella pneumophilia Type 1 is measured using an IgM-specific conjugate. It is recommended that the IgM test always be performed in conjunction with the 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.

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