Legionella Antibody Assay

This is a blood test used to detect antibodies to a bacteria called Legionella pneumophila in your blood. The test is used to help diagnose an infection called legionellosis, or Legionnaires' Disease. This organism also caused an illness called Pontiac fever. Detecting the antibody against this bacteria in your blood is the most common and easiest method for diagnosis.

PREPARATION FOR TEST

No preparation or fasting is necessary.

NORMAL FINDINGS

  • IgM titer: =1:64

  • Combined IgG/IgA/Igm titer: <1:128 (<4-fold increase in antibody titer)

Ranges for normal findings may vary among different laboratories and hospitals. You should always check with your doctor after having lab work or other tests done to discuss the meaning of your test results and whether your values are considered within normal limits.

MEANING OF TEST

Your caregiver will go over the test results with you and discuss the importance and meaning of your results, as well as treatment options and the need for additional tests if necessary.

OBTAINING THE TEST RESULTS

It is your responsibility to obtain your test results. Ask the lab or department performing the test when and how you will get your results.