Ehrlichia/Anaplasma Ab Panel IgG/IgM

Test Code

Quest Code

CPT Codes
86666 (x4)

Anaplasma phagocytophilum (IgG, IgM), Ehrlichia chaffeensis (IgG, IgM)

Preferred Specimen
1 mL serum

Minimum Volume
0.4 mL

Transport Container
Plastic screw-cap vial

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days

Immunofluorescence Assay (IFA)

FDA Status
*This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. The FDA has determined that such clearance or approval is not necessary. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule
Set up: Tues-Sat a.m.; Report available: Next day

Reference Range
A. phagocytophilum IgG <1:64
A. phagocytophilum IgM  <1:20
E. chaffeensis IgG <1:64
E. chaffeensis IgM <1:20

Clinical Significance

Anaplasma phagocytophilum and Ehrlichia chaffeensis are tick-borne agents that cause an acute febrile illness, which often resembles Rocky Mountain spotted fever.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.