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Test Code BLOD1397 Saccharomyces cerevisiae Antibody, IgA, Serum

Additional Codes

Mayo Test Code: AASCA

Useful For

Helping clinicians distinguish between ulcerative colitis and Crohn’s disease in patients suspected of having inflammatory bowel disease

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type


Specimen Required


Preferred: Serum gel

Acceptable: Red top

Specimen Volume: 0.5 mL

Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 21 days
  Frozen  21 days

Reference Values

Negative: ≤20.0 U

Equivocal: 20.1-24.9 U

Weakly positive: 25.0-34.9 U

Positive: ≥35.0 U

Reference values apply to all ages.

Day(s) and Time(s) Performed

Monday through Friday; 5 p.m.

Test Classification

This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information


Reject Due To


Mild OK; Gross reject


Mild OK; Gross reject


Mild OK; Gross OK



Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)


If not ordering electronically, complete, print, and send a Gastroenterology and Hepatology Test Request Form (T728) with the specimen (