Casandra
Casandra Test Code QD38334Version 1 (DRAFT)
Performing Lab
Saccharomyces cerevisiae Antibodies (ASCA) (IgA)
Also known as: Inflammatory Bowel Disease, ASCA, IBD
Clinical Use
Order TestUse
Antibodies to Saccharomyces cerevisiae (ASCA IgA) are found in approximately 75% of patients with Crohn’s disease, 15% of patients with ulcerative colitis, and 5% of healthy individuals. Elevated titers increase the likelihood of Crohn’s disease and are associated with more aggressive disease course. IgA antibodies predominate in mucosal inflammation characteristic of Crohn’s disease, and a subset of patients display only IgG or only IgA antibodies when both tests are available.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Immunoassay
Biomarkers
Saccharomyces cerevisiae IgA antibody
ProteinIgA antibody to S. cerevisiae
Other • Categorical (e.g., Positive / Negative / Indeterminate)
Result Turnaround Time
6 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
1 mL
Minimum Volume
0.3 mL
Causes for Rejection
Gross hemolysis • Lipemia
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 14 days |
| Refrigerated | 21 days |
| Frozen | 21 days |
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