Saccharomyces cerevisiae Antibodies (ASCA) (IgA)
Test Summary
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.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL serum
Minimum Volume
0.3 mL
Instructions
N/A
Patient Preparation
N/A
Storage
N/A
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 14 days
- Refrigerated: 21 days
- Frozen: 21 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Gross hemolysis • Lipemia
Order Code
ASCAA
EPIC (Premier) Code
LAB3045
Includes
N/A
CPT Code
- 86671
Billing Code
- 670567
CPT Statement
Methodology
Immunoassay (IA)
FDA Status
FDA Approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153
14225 Newbrook Drive
Chantilly VA, 20153
Department
Reference Testing
Reference Range
≤20.0 U
| Value | Interpretation |
| ≤20.0 | Negative |
| 20.1-24.9 | Equivocal |
| ≥25.0 | Positive |
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday morning; Report available: 1 day
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL serum
Minimum Volume
0.3 mL
Instructions
N/A
Patient Preparation
N/A
Storage
N/A
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 14 days
- Refrigerated: 21 days
- Frozen: 21 days
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Gross hemolysis • Lipemia
Result Information
Methodology
Immunoassay (IA)
Testing Laboratory
N/A
Reference Range
≤20.0 U
| Value | Interpretation |
| ≤20.0 | Negative |
| 20.1-24.9 | Equivocal |
| ≥25.0 | Positive |
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday morning; Report available: 1 day