Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  

EHRLICHIA AB PANEL

ORDERING INFORMATION:
Sunquest Test Code:
EHRLP      Geisinger Epic Procedure Code: 86256.13         Geisinger Epic ID: 17792

SPECIMEN COLLECTION
Specimen type:
Serum
Preferred collection container:
Alternate Collection Container:
3.5 mL gold-top (serum separator) tube
Specimen required:
1 mL aliquot of serum; minimum 0.2 mL.
Special notes:
Plain red-top (nonserum separator) tube preferred. Serum separator tube (SST) also acceptable.

SPECIMEN PROCESSING
Specimen processing instructions:
Allow blood to clot at room temperature. Aseptically transfer serum to sterile, plastic, screw-capped vial(s). Transport refrigerated (cold packs) or frozen on dry ice. Avoid freeze/thaw cycles. 
Transport temperature:
Refrigerated or frozen.
Specimen stability:
Room Temperature: 7 days. Refrigerated: 14 days. Frozen: 30 days (-20°C).
Rejection criteria:
Stability limits exceeded.

TEST DETAILS
Reference interval:
1:64 -_E. chaffeensis IgG Ab
< 1:20 - E. chaffeensis IgM Ab
Interpretation guide:
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 E. chaffeensis, which can be detected by an immunofluorescent antibody (IFA) test. Single IgG IFA titers of 1:64 or greater indicate exposure to E. chaffeensis. Specimens demonstrating a fourfold rise in IgG titers between acute and convalescent samples and/or the presence of IgM antibody against E. chaffeensis suggest recent or current infection
CPT code(s):
86666 x 2
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Ehrlichia chaffeensis antibodies (IgG,IgM)
Methodology:
Indirect Immunofluorescent Antibody (IFA)
Synonyms:
Ehrlichia chaffeensis AB
Quest test code 34271

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Set up: Tuesday-Saturday, report available next day    
Performed stat? No
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