Reference Interval:
< 1:16 Negative-No significant level of Ehrlichia chaffeensis IgM antibody detected.
≥ 1:16 Positive-Presence of IgM antibody to Ehrlichia chaffeensis detected, suggestive of current or recent infection.
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| Interpretive Data: |
While the presence of IgM antibodies suggests current or recent infection, low levels of IgM antibodies may occasionally persist for more than 12 months post-infection. A single IgM result should be interpreted with caution.
Refer to Statement B under Testing Information at http://www.aruplab.com.
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| Note: |
Human ehrlichiosis is a tick-borne disease caused by rickettsial-like agents. Two forms, human monocytic ehrlichiosis (HME) and human granulocytic ehrlichiosis (HGE), have been described. HME is often referred to as "spotless" or rashless Rocky Mountain spotted fever, and has been reported in various regions of the United States. The causative agent of HME has been identified as Ehrlichia chaffeensis. Infected individuals produce specific antibodies to Ehrlichia chaffeensis which can be detected by an immunofluorescent antibody (IFA) test.
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| CPT Code(s): |
86666
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Cross References: |
Human Monocoytic Ehrlichiosis (HME) (Ehrlichia chaffeensis Antibody, IgM by IFA)
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