Anaplasma phagocytophilum Antibodies, IgG & IgM

HGA, Human Granulocytic Anaplasmosis

Test Codes

EPIC: LAB1231225, Beaker: XAPAB, ARUP: 97303

Department

Send Outs

Specimen Collection Criteria

Collect (preferred specimen): One Gold-top SST tube.

Also acceptable: One plain Red-top tube.

Physician Office/Draw Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells within 2 hours of collection. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Preparation for Courier Transport

Transport: 0.5 mL serum, refrigerated (2-8°C or 36-46°F). (Minimum: 0.4 mL)

Rejection Criteria

• Hemolyzed specimens.
• Icteric specimens.
• Lipemic specimens.
• Turbid specimens.
• Bacterially contaminated.
• Heat activated.
• Specimens not collected and processed as indicated.

In-Lab Processing

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells within 2 hours of collection. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Transport: 0.5 mL serum, refrigerated (2-8°C or 36-46°F). (Minimum: 0.4 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 48 hours
Refrigerated (2-8°C or 36-46°F): 14 days
Frozen (-20°C/-4°F or below): 1 year

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to ARUP Laboratories, Salt Lake City, UT.

Performed

Tuesday, Friday.
Results available in 2-6 days. 

Reference Range

By report.

Test Methodology

Semi-Quantitative Indirect Fluorescent Antibody (IFA).

Interpretation

By report.

CPT Codes

86666 x 2.

Contacts

Last Updated

10/28/2025