Coccidioides Antibodies (IgG, IgM), Immunodiffusion

Test Code
19963


CPT Codes
86635 (x2)

Includes
Antibody to TP Antigen (IgM) and Antibody to F Antigen (IgG)


Preferred Specimen
0.5 mL serum


Minimum Volume
0.1 mL


Transport Container
Transport tube


Transport Temperature
Room temperature


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


Methodology
Immunodiffusion (ID)

Setup Schedule
Set up: Mon, Wed-Sat; Report available: 4-7 days


Reference Range
Ab to TP Antigen (IgM), ID Negative
Ab to F Antigen (IgG), ID Negative


Clinical Significance
Detection of antibodies to Coccidioides antigens plays an important role in identifying patients with coccidioidomycosis. Antibodies to Coccidioides TP antigen usually appear during the first week of infection, and remain detectable for approximately 5 months; their detection indicates recent, active infection. Antibodies to Coccidioides F antigen appear within a month of infection, and remain detectable for up to a year thereafter.


Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042




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.