Test ID: ZG143
Component(s): Z0613 Saccharomyces cerevisiae, IgG LOINC: 6713-2, Z0612 Saccharomyces cerevisiae, IgA LOINC: 31032-6, Z0614 Atypical pANCA LOINC: 49503-6
CPT code: 86671X2, 86037
LOINC:
Specimen Type: Red or SST
Frequency: 2 – 5 days
Instructions: 1.5 mL Serum from Red or SST, Refrigerated. Min 0.7.
Text: Used to rule out Crohn’s disease and ulcerative colitis. IgA and IgG antibody testing for S cerevisiae is useful adjunct testing for differentiating Crohn’s disease and ulcerative colitis. Nearly 80% of Crohn’s disease patients are positive for either IgA or IgG. In ulcerative colitis, <15% are positive for IgG, and <2% are positive for IgA.
Methodology: Atypical ANCA: Indirect fluorescent antibody (IFA); Saccharomyces cerevisiae, IgA and IgG: Enzyme immunoassay (EIA)