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The Coccidioides Antibody Immunodiffusion test is used for the in vitro determination of precipitating antibodies to Coccidioides TP and F antigens. It is used as an aid in the diagnosis of Coccidioidomycosis.
Fungal Immunodiffusion
The result is not intended to be used as the sole means for clinical diagnosis or patient management decisions.
Cross Reactivity/False Positive: Moderate to Low: Histoplasma, Blastomyces, and Aspergillus
Testing is performed Tuesday & Friday.
Results released: Positive: 24 hours; Negative: 72 hours
Negative: Antibody not detected
Positive: Antibody detected, will report titer up to ≥1:128
Specimen: Serum, CSF*, Plasma*
*Uncommon specimen includes incomplete validation. A ’rare specimen’ note will appear on the final report.
Container:
Serum: Collect serum specimens in serum separator tube. Allow blood to clot for 30 minutes, then centrifuge. Send serum in serum separator tube or transfer tube.
CSF, Plasma: Separator or transfer tube
Volume: 0.25 mL
Stability: Room temperature = 28 days, Refrigerated = 6 months, Frozen = indefinite
Any specimen types other than serum, CSF, plasma
Refrigerated/Frozen
Ship overnight with a cold pack.