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Test Code EHRCP Ehrlichia Antibody Panel, Serum

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Method Name

Immunofluorescence Assay (IFA)

Reporting Name

Ehrlichia Ab Panel


Specimen Required


Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Specimen Volume: 0.5 mL


Specimen Type

Serum

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 14 days
  Frozen  14 days

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject
Other Heat-inactivated specimen

Reference Values

ANAPLASMA PHAGOCYTOPHILUM

<1:64

Reference values apply to all ages.

 

EHRLICHIA CHAFFEENSIS

<1:64

Reference values apply to all ages.

Day(s) and Time(s) Performed

Monday through Friday; 9 a.m.

Test Classification

This test was developed using an analyte specific reagent. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

86666 x 2

LOINC Code Information

Test ID Test Order Name Order LOINC Value
EHRCP Ehrlichia Ab Panel 77165-9

 

Result ID Test Result Name Result LOINC Value
81157 Anaplasma phagocytophilum Ab, IgG,S 23877-4
81478 Ehrlichia Chaffeensis (HME) Ab, IgG 47405-6

Useful For

As an adjunct in the diagnosis of infection with Anaplasma phagocytophilum or Ehrlichia chaffeensis

 

Seroepidemiological surveys of the prevalence of the infection in certain populations

Profile Information

Test ID Reporting Name Available Separately Always Performed
ANAP Anaplasma phagocytophilum Ab, IgG,S Yes Yes
EHRC Ehrlichia Chaffeensis (HME) Ab, IgG Yes Yes

Testing Algorithm

See Acute Tick-Borne Disease Testing Algorithm in Special Instructions.

Interpretation

A positive immunofluorescence assay (titer ≥1:64) suggests current or previous infection. In general, the higher the titer, the more likely the patient has an active infection. Four-fold rises in titer also indicate active infection.

 

Previous episodes of ehrlichiosis may produce a positive serology although antibody levels decline significantly during the year following infection.

Forms

If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.