Simira Diagnostics
Immunology

ASCA IgA

  • Report in 5 hrs
  • Serum sample

Price

₹4,540

  • Report in 5 hrs
  • Free home sample collection
  • ₹200 off at checkout
  • NABL certified lab

or call 77900 98009

ASCA IgA

₹4,540

About this test

The ASCA IgA test detects IgA antibodies against Saccharomyces cerevisiae, a common yeast. It is a useful marker in inflammatory bowel disease (IBD).

A normal result is negative, below the lab’s cut-off value.

A positive ASCA, especially with negative p-ANCA, strongly suggests Crohn’s disease rather than ulcerative colitis. It is often linked to small-bowel (ileal) involvement, strictures or fistulas, and a higher chance of surgery.

It may also be positive in celiac disease and some family members of Crohn’s patients. Results are interpreted with colonoscopy and biopsy findings.

Questions about this test

When should I get the ASCA IgA test?

You should get an ASCA IgA test if you have chronic diarrhea, abdominal pain, weight loss, blood or mucus in stools, or anal fistulas, suggesting inflammatory bowel disease. It is especially useful when it is unclear whether IBD is Crohn’s disease or ulcerative colitis, and to assess the risk of complicated Crohn’s disease.

How should I prepare for the ASCA IgA test?

No special preparation or fasting is required for an ASCA IgA test. Inform your doctor about any steroids, immunosuppressants, or biologic medicines for IBD. Bring previous colonoscopy, biopsy, stool calprotectin, and p-ANCA reports if available, as ASCA results are interpreted together with these findings.

Do I require fasting for the ASCA IgA test?

No, fasting is not required for an ASCA IgA test. You can eat and drink normally before giving your sample, and the test can be done at any time of day. Inform your doctor about any IBD treatment you are taking to help interpret the results correctly.

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