Looking for ILS? We've moved to our new website. Some users may experience temporary access delays during the transition. We appreciate your patience as we complete this update.
Share to
  • Email
  • Facebook
  • X
  • Bluesky
  • Instagram
  • LinkedIn
Share to
  • Email
  • Facebook
  • X
  • Bluesky
  • Instagram
  • LinkedIn
Back to Test Catalogue
Test ID: ASCA

Saccharomyces cerevisiae Antibodies, Serum

Test Overview

Clinical Utility

The Anti Saccharomyces cerevisiae Antibodies may be clinically useful in the evaluation of suspected Inflammatory Bowel Disease including Crohn’s Disease and Ulcerative Colitis. ASCA are reported to be significantly more prevalent in Crohn’s Disease than in Ulcerative Colitis or Normal Individuals. The ASCA have also been reported positive in some patients with other autoimmune diseases including Celiac Disease. The inflammatory bowel disease’s (Crohn’s Disease, Ulcerative Colitis) are chronic remitting disorders with an unpredictable course and variable response to therapy. The diagnosis of the inflammatory bowel diseases is based on clinical, radiological, endoscopic and histological findings. Immunological, environmental, infectious and genetic factors have been postulated to increase the risk for developing IBD. The ASCAs are directed against phosphopeptidomannans present in yeast cell walls. ASCA may be elicited due to molecular mimicry and priming by a high dose mannose containing bacteria, viral antigen or an auto antigenic molecule.

Method

Enzyme-linked immunosorbent assay (ELISA)

Result Included

Saccharomyces cerevisiae Antibodies IgA; Saccharomyces cerevisiae Antibodies IgG

Specimen

Specimen Type

Serum

Volume

Sample Volume

1 mL

Specimen Comment

Avoid hemolysis

Collection & Handling

Handling Information

Store and send cold or frozen.

Stability

Refrigerated Frozen
1 week >1 week

Avoid freeze/thaw cycles.

Rejection Criteria

Criteria Specification
Hemolysis Visible
Lipemia Visible
Other Bacterial contamination

Performance & Interpretation

Turnaround Time

23 days

Results

Name
Units
Reference Range
Conversion
  1. Saccharomyces cerevisiae Antibodies IgA
    KEU/L
    Negative: <20
    Borderline: 20 - 25
    Positive: >25
  2. Saccharomyces cerevisiae Antibodies IgG
    KEU/L
    Negative: <20
    Borderline: 20 - 25
    Positive: >25

Referral Location

Canada

Interface & Setup

HL7 Interface Codes

Order Code Result Name Result Codes Units
ASCA Anti Saccharomyces IgA 3148 KEU/L
Anti Saccharomyces IgG Ab'S 3194 KEU/L

Test Version

Last Updated

2024-03-19