Aspergillus Antibody Immunodiffusion
From Aspergillus Tests
Details
Methodology
Fungal Immunodiffusion
Limitations
The result is not intended to be used as the sole means for clinical diagnosis or patient management decisions.
- Negative serologic tests may be observed among culturally demonstrable cases, which limits the predictive value of a negative test.
- Negative serologic results obtained during the first month may warrant repeat testing.
- Falsely negative results may be obtained when testing immunocompromised patients.
- Test results cannot be used solely to distinguish between active infection and prior exposure.
- C-Reactive Protein present in the patient’s serum may interfere with interpretation of results.
- Cross Reactivity/False Positive: Moderate to Low: Blastomyces, Histoplasma, and Coccidioides
Turnaround Time
Testing performed Tuesday and Friday.
Results Released: Positive: 24 hours; Negative: 72 hours.
Reference Range
Antibody not detected
Interpretative Information
Negative: Antibody not detected
Positive: Antibody detected
Specimen Collection
Specimens: 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 in serum separator tube or transfer tube.
CSF, Plasma: Submit CSF and plasma in a leak-proof plastic tube.
Volume: 0.25mL
Stability: Room temperature = 28 days, Refrigerated = 6 months, Frozen = indefinite
Any specimen types other than serum, CSF, plasma
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