Description
The Rickettsia Group IgG and IgM Antibody Test is a blood test used to detect antibodies to bacteria in the Rickettsia family, which can cause illnesses transmitted by ticks, fleas, mites, and lice.
Common rickettsial infections include:
Rocky Mountain Spotted Fever
Typhus
Rickettsialpox
Why Consider Testing?
Your healthcare provider may recommend this test if you have symptoms such as:
Fever
Headache
Rash
Muscle aches
Fatigue
Recent tick or flea exposure
Recent outdoor activities in wooded or grassy areas
Understanding IgG and IgM
IgM Antibodies
Usually appear early in an infection
May indicate a recent or active infection
Can become detectable within the first few weeks after exposure
IgG Antibodies
Develop later than IgM
May indicate past exposure or a more established immune response
Can remain detectable for months or years
Who May Benefit From Testing?
Individuals with suspected tick-borne illness
People with unexplained fever and rash
Outdoor workers, hikers, hunters, and campers
Patients with symptoms following known tick exposure
Important Notes
Antibody tests may be negative early in infection.
Repeat testing may be recommended if symptoms are highly suggestive of rickettsial disease.
Results should be interpreted together with symptoms, exposure history, and other laboratory findings.
Specimen Required
Blood sample
Preparation
No fasting required.
