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C. diff, C. difficile
This is a test to look at your stool for toxins produced by Clostridium difficile bacteria.
Your gastrointestinal (GI) tract is home to many healthy bacteria, and sometimes C. difficile is one of them. But in some cases, taking broad-spectrum antibiotics can upset the balance of healthy bacteria in your gut and cause new or antibiotic-resistant strains of C. difficile to grow out of control. These germs can then release toxins into your GI tract, inflaming the colon and causing continuing diarrhea. The resulting illness can be serious, even life-threatening, if you have a weak immune system.
Even if they are not taking antibiotics, people with a weak immune system often have an overabundance of C. difficile bacteria.
Your doctor might order this test if you have any of these symptoms, especially if you are in the hospital or were recently taking antibiotics:
Diarrhea. This means 3 or more loose stools per day for at least 2 days.
Blood or mucus in your stool
Stomach pain, nausea, loss of appetite, or fever, particularly if you have persistent diarrhea
Your healthcare provider might order other stool tests to look for C. difficile infection, such as a glutamate dehydrogenase, or GDH, test and a stool culture test.
If your stool tests are negative, but your doctor still strongly suspects C. difficile infection, you may have a sigmoidoscopy or colonoscopy to help make a diagnosis. In this procedure, a doctor examines your colon with a very thin, flexible lighted tube that is equipped with a tiny video camera on the end.
This infection is a major cause of illness and death among older adults who are in the hospital, so healthcare providers are likely to test people in this group who develop persistent diarrhea after taking antibiotics.
Many things may affect your lab test results. These include the method each lab uses to do the test. Even if your test results are different from the normal value, you may not have a problem. To learn what the results mean for you, talk with your healthcare provider.
A normal result for this stool test is negative, which means you had no C. difficile toxins in your sample. But this test result is not accurate all of the time. A small portion of people might have the infection even if the result is negative. If your healthcare provider still suspects infection, he or she may do other tests.
If your stool tests positive for C. difficile toxins, your doctor may decide that you have antibiotic-associated colitis, or inflammation of the colon.
This test requires a stool sample. Your healthcare provider will instruct you how to collect a sample into a disposable specimen container with a lid. Do not collect fecal material from the toilet bowl or put toilet paper into the specimen container.
This test poses no known risks.
Contaminating the stool sample with toilet water, urine, or other substances can make it unfit for testing or skew the results.
You don't need to prepare for this test.
Bayhealth is Southern Delaware’s healthcare leader with hospitals in Dover and in Milford. Bayhealth provides a wide range of medical services, including cardiovascular, cancer, orthopaedics and rehabilitation, pediatrics, respiratory care, sleep care, surgical weight loss and women’s services.