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Saccharomyces cerevisiae Antibodies (ASCA) (IgA)
MessageIf both IgA and IgG are requested, order Misc Quest Test Code 17609X.
Test Code
ASCAA
Quest Code
10295
Alias/See Also
ASCA IgA
ASCA-A
Saccaromyces cerevisiae IgA
ASCA-A
Saccaromyces cerevisiae IgA
CPT Codes
86671
Preferred Specimen
1 mL serum
Minimum Volume
0.3 mL
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 14 days
Refrigerated: 21 days
Frozen: 21 days
Refrigerated: 21 days
Frozen: 21 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Lipemia
Methodology
Immunoassay (IA)
Setup Schedule
Tuesday-Saturday Morning
Report available: Next Day
Report available: Next Day
Reference Range
≤20.0 U
Value | Interpretation |
≤20.0 | Negative |
20.1-24.9 | Equivocal |
≥25.0 | Positive |
Clinical Significance
Antibodies to saccharomyces cerevisiae are found in approximately 75% of patients with Crohn's disease, 15% of patients with ulcerative colitis, and 5% of the healthy population. High titers of antibody increase the likelihood of disease, and specifically Crohn's disease, and are associated with more aggressive disease.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153
Last Updated: August 12, 2019