Ehrlichia Antibody Panel, Serum

Casandra

Casandra Test Code MC41859Version 1 (DRAFT)

Performing Lab

Lab Mayo Clinic LabLab Test ID EHRCPCPT Code 86666

Ehrlichia Antibody Panel, Serum

Clinical Use

Use

The Ehrlichia Antibody Panel, Serum is useful as an adjunct in diagnosing infections caused by Anaplasma phagocytophilum or Ehrlichia chaffeensis. It is also used in seroepidemiological surveys to determine the prevalence of these infections in specific populations. Anaplasma phagocytophilum is primarily transmitted by Ixodes ticks and is associated with human granulocytic anaplasmosis, whereas Ehrlichia chaffeensis is transmitted by Amblyomma ticks and is linked to human monocytotropic ehrlichiosis. These infections can vary from subclinical to life-threatening, particularly in immunocompromised patients.

Special Instructions

The test is performed Monday through Friday with results typically available the same day or within 1 to 3 days. If not ordering electronically, complete and send the Infectious Disease Serology Test Request form with the specimen. Preferred collection method includes centrifugation and aliquoting serum into a plastic vial.

Limitations

Serology results may be negative during the acute phase of infection, typically within the first 7 days post-symptom onset. In such cases, nucleic acid amplification testing is recommended. IgG antibodies may persist for months or years, therefore, a single positive result must be interpreted in conjunction with clinical findings to differentiate between recent and past infections. Other Ehrlichia species may not be detected by this assay, and factors like improper specimen collection can affect results.

Test Details

New York Approved