640 South State StreetDover, Delaware 19901
21 West Clarke AvenueMilford, Delaware 19963
401 North Carter RoadSmyrna, DE 19977
640 S. State StreetDover DE 1990121 West Clarke AvenueMilford DE 19963
301 Jefferson AveMilford, DE 19963
1275 S. State StreetDover, Delaware 19901
Legionnaires' disease antibody test, Legionella antibody assay
This test looks for an antibody that may be in your blood if you have Legionnaires' disease.
Legionnaires' disease is a type of pneumonia or serious lung infection caused by bacteria called Legionella.
Antibodies are proteins that your immune system makes to fight infection or foreign invaders. The bacteria and the disease get their name because of an outbreak that occurred among people attending an American Legion convention in Philadelphia in 1976.
You might have this test to see if your healthcare provider suspects that you have Legionnaires' disease. Or you may have this test if your provider thinks you have a milder form of infection known as Pontiac fever. Symptoms of Legionnaires' disease include:
Symptoms may begin 2 days to 2 weeks after you are exposed to the bacteria.
You may need this test again in several weeks to confirm your diagnosis or to see whether you have recovered.
Your healthcare provider might also order a chest X-ray to diagnose pneumonia. He or she might also take a sample of your mucus or lung tissue for a culture test, and order a urine test to look for Legionella.
Many things may affect your lab test results. These include the method each lab uses to do the test. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your healthcare provider.
Normal results are negative. This means no Legionella antibody was found in your blood. A positive result means that Legionella antibodies were found. You may have Legionnaires' disease.
The test requires a blood sample, which is drawn through a needle from a vein in your arm.
Taking a blood sample with a needle carries risks that include bleeding, infection, bruising, or feeling dizzy. When the needle pricks your arm, you may feel a slight stinging sensation or pain. Afterward, the site may be slightly sore.
If the test is done too early after you are infected, you may have a false-negative result.
You don't need to prepare for this test.
Bayhealth is Southern Delaware’s healthcare leader with hospitals in Dover and in Milford. Bayhealth provides a wide range of medical services, including cardiovascular, cancer, orthopaedics and rehabilitation, pediatrics, respiratory care, sleep care, surgical weight loss and women’s services.