Lab test
Ulcerative Colitis (UC) Test
The ulcerative colitis (UC) test uses blood markers to support evaluation of ulcerative colitis, a form of inflammatory bowel disease that affects the inner lining of the colon.
- Typical price
- From $298
- Results
- 1-3 business days
- Preparation
- See preparation notes below
- Sample
- Blood draw or sample collection at a local center
About this test
The ulcerative colitis (UC) test uses blood markers to support evaluation of ulcerative colitis, a form of inflammatory bowel disease that affects the inner lining of the colon. It commonly includes antineutrophil cytoplasmic antibodies (ANCA), especially the p-ANCA pattern, along with general inflammation markers and a complete blood count. These tests do not diagnose UC on their own. They are used with symptoms, imaging, and colonoscopy when chronic digestive symptoms are being assessed.
What this test measures
- Antineutrophil Cytoplasmic Antibodies (p-ANCA) Antibodies that may be associated with ulcerative colitis and some other conditions.
- C-Reactive Protein (CRP) A general marker of inflammation.
- Erythrocyte Sedimentation Rate (ESR) A nonspecific inflammation marker.
- Complete Blood Count (CBC) Evaluates blood cells and can reveal anemia or other changes.
Who this test may be right for
- People with chronic diarrhea or rectal bleeding
- Individuals with abdominal cramping or urgency
- Patients being evaluated for inflammatory bowel disease
- People with a family history of ulcerative colitis
Before your visit
- No fasting is usually required unless other tests need it
- Report all medications, including steroids and biologics
- Tell the phlebotomist about recent infections that may affect antibody tests
- Follow any additional instructions in your order
Understanding your results
A positive p-ANCA result, especially with elevated inflammation markers, may support further evaluation for ulcerative colitis. However, ANCA can be present in other conditions and may be absent in people who have UC. Results are always combined with symptoms, imaging, and colonoscopy. Discuss your ulcerative colitis test results and whether more testing is needed with a healthcare provider.
Order this test online
- Buy online in a few minutes - no doctor's visit needed for most tests.
- Sample collection at a patient service center near you.
- Results are typically ready within 1-3 business days.
- Secure, lab-reviewed results delivered to your account.
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Questions people ask
Can the ulcerative colitis test confirm the diagnosis?
No. It provides supporting information, including p-ANCA and inflammation markers. Diagnosis of ulcerative colitis usually requires colonoscopy and specialist evaluation.
What does a positive p-ANCA result mean?
p-ANCA is an antibody sometimes associated with ulcerative colitis, but it can occur in other conditions too. It is interpreted with your symptoms and other tests.
What do elevated CRP and ESR indicate?
They indicate inflammation somewhere in the body. They support evaluation but do not identify the cause or location.
Do I need to fast for this test?
Fasting is usually not required unless the order includes tests that need it. Check your specific instructions.
What does the Ulcerative Colitis (UC) Test measure?
Order Ulcerative Colitis (UC) Test.com online through our partner and visit a local lab near you.
Do I need to fast before this test?
Follow the lab's instructions.
How long do results take?
Most Ulcerative Colitis (UC) Test results are released in 1-3 business days. Specialty testing can take longer.
Is this test right for me?
This page is educational and not medical advice. Talk to a licensed healthcare provider about which tests fit your situation.
LabBookings is an independent directory. We compare test details and pricing information, but we are not a laboratory and we do not perform testing or provide medical advice. Always talk to a licensed healthcare provider about your results and treatment.
Laboratory services are provided by independent, CLIA-certified testing partners. Availability, pricing, and turnaround times can vary by location and are confirmed at checkout.