Ordering Recommendation
Aids in the diagnosis of coccidioidomycosis. Includes testing by complement fixation and immunodiffusion. For comprehensive diagnostic testing that includes immunoassay (IgM and IgG), complement fixation, and immunodiffusion, refer to Coccidioides Antibodies Panel, Serum (0050588).
Mnemonic
Methodology
Complement Fixation/Immunodiffusion
Performed
Sun-Sat
Reported
2-6 days
New York DOH Approval Status
Specimen Required
Serum Separator Tube (SST).
Separate from cells ASAP or within 2 hours of collection. Transfer 2 mL serum to an ARUP Standard Transport Tube. (Min: 0.6 mL). Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens.
Refrigerated.
Other body fluids. Contaminated, hemolyzed, icteric, or lipemic specimens.
Mark specimens plainly as "acute" or "convalescent".
Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Reference Interval
Effective May 16, 2022
Test Number |
Components |
Reference Interval |
---|---|---|
Coccidioides by Immunodiffusion, Serum | Not detected. | |
0050170 | Coccidioides Antibodies by Complement Fixation | Less than 1:2 |
Interpretive Data
Refer to report
FDA
Note
This immunodiffusion test uses culture filtrates of Coccidioides immitis and includes CF and TP antigens.
Hotline History
Hotline History
CPT Codes
86635 x2
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0050170 | Coccidioides Antibody by CF | 33380-7 |
0050183 | Coccidioides by Immunodiffusion, Serum | 5095-5 |
Aliases
- CF
- Coccidioides immitis
- Coccidioidomycosis
- Precipitin
- TP
- Valley fever