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HelpTest Code ASCA Saccharomyces cerevisiae IgA and IgG Antibodies, Serum
Additional Codes
Sunrise Clinical Manager (SCM) Orderable: IgA/IgG Antibodies
AllScripts (AEHR) Orderable: IgA/IgG Antibodies
Performing Laboratory
Northwell Health Laboratories
Methodology
Enzyme-Linked Immunosorbent Assay (ELISA)
Reference Values
ASCA IgA or ACSA IgG
Negative: ≤20.0 Units
Equivocal: 20.1-24.9 Units
Weak positive: 25.0-34.9 Units
Positive: ≥35.0 Units
Test Classification and CPT Coding
83520 x 2
Day(s) and Time(s) Performed
Two times per week
Physician Office Specimen Requirements
Container/Tube: Gold-top tube(s)
Specimen: 1 mL of serum
Transport Temperature: Refrigerate
Computer Interface Code
PDM # 5702020
Useful For
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.