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Test ID: EHRCP    
Ehrlichia Antibody Panel, Serum

Useful For Suggests clinical disorders or settings where the test may be helpful

As an adjunct in the diagnosis of ehrlichiosis

 

In seroepidemiological surveys of the prevalence of the infection in certain populations

Clinical Information Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test

See individual unit codes

Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.

<1:64

Interpretation Provides information to assist in interpretation of the test results

Serology for IgG may be negative during the acute phase of infection but a diagnostic titer usually appears by the third week after onset.

 

A positive immunofluorescence assay (titer > or =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.

Cautions Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances

Performance characteristics have not been established for hemolyzed or lipemic specimens.

Clinical Reference Provides recommendations for further in-depth reading of a clinical nature

Fishbein DB, Dawson JE, Robinson LE: Human ehrlichiosis in the United States, 1985 to 1990. Ann Intern Med 1994;120:736-743

Special Instructions and Forms Describes specimen collection and preparation information, test algorithms, and other information pertinent to test. Also includes pertinent information and consent forms to be used when requesting a particular test