A gastroenterologist is the specialist who usually diagnoses and treats ulcerative colitis (UC). Diagnosing ulcerative colitis usually starts with a careful look at your health history. Your doctor will want to know certain information about the health of family members, as well as details about any past or current digestive problems. You can also expect to have a physical exam and a series of tests that often includes blood tests and stool samples. In addition, your doctor will want to schedule you for a sigmoidoscopy or colonoscopy, procedures that allow the doctor to see inside your colon.
Common ulcerative colitis diagnostic tests
A colonoscopy or a sigmoidoscopy is considered the most accurate method for making a diagnosis of UC. They can help rule out other possible conditions, such as Crohn’s disease, diverticular disease, or cancer. Both procedures are performed by a specialist on an outpatient basis.
A sigmoidoscopy uses a flexible scope to directly examine the rectum or lower colon. The scope transmits a video image from inside the lower colon onto a computer screen so your doctor can examine the tissue lining.
A colonoscopy examines the entire colon and also transmits video of the colon tissue. This procedure can last 30 to 60 minutes. If your doctor orders a colonoscopy, it is very important that you follow the prep instructions.
Doctors may also use a type of x-ray procedure called a barium enema to diagnose UC in the early stages of the disease.
Routine monitoring
Doctors use the same tests to diagnose ulcerative colitis and to monitor changes in your condition. Ask your doctor how often you can expect to repeat these tests.
