Reference Interval:
| Available Separately
| Components
| Reference Interval
| | No
| Saccharomyces cerevisiae Antibody, IgA
| 20.0 Units or less: Negative
20.1 to 24.9 Units: Equivocal
25.0 Units or greater: Positive
| | No
| Saccharomyces cerevisiae Antibody, IgG
| 20.0 Units or less: Negative
20.1 to 24.9 Units: Equivocal
25.0 Units or greater: Positive
|
|
| Interpretive Data: |
Saccharomyces cerevisiae IgG antibodies are found in 60-70% of Crohn disease (CD) patients and 10-15% of ulcerative colitis (UC) patients. Saccharomyces cerevisiae IgA antibodies are found in about 35% of CD patients but less than 1% in UC patients. Detection of both Saccharomyces IgG and IgA antibodies in the same serum specimen is highly specific for CD.
|
| Note: |
This test may be a useful tool for distinguishing ulcerative colitis (UC) from Crohn disease (CD) in patients with suspected inflammatory bowel disease.
|
| CPT Code(s): |
86671 x2
|
Cross References: |
IBD Antibodies, IgG & IgA |