Saccharomyces cerevisiae, IgA; Saccharomyces cerevisiae, IgG
3 - 5 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Serum
0.4 mL
0.2 mL
Red-top tube or gel-barrier tube
Specimen should be free of bacterial contamination, hemolysis, and lipemia.
Room temperature
Temperature
Period
14 days
Refrigerated
Frozen
Hemolysis; lipemia; heat-treated specimen; gross bacterial contamination
Semiquantitative detection of anti-Saccharomyces cerevisiae antibodies (ASCA) of the IgG and IgA classes in human sera. This assay is intended for use in the diagnosis of patients with Crohn's disease.
Enzyme immunoassay (EIA)
• Negative: <20 units
• Equivocal: 20.0-24.9 units
• Positive: =25 units
