False
negatives from C Diff testing are common, that is why some people tested negatively for C Diff the first time but tested positive with a 2nd test. Ask your doctor if there might be a false
positive here.
/medicine-matters.blogs.hopkinsmedicine.org/2016/03/one-minute-guide-to-clostridium-difficile-testing/C. diff PCR is a highly sensitive test (90%).4 In fact, it is so sensitive that it may be positive and detect the C. diff toxin gene even when the gene is not actively producing toxin. This results in many patients who have a positive test and do not have C. diff infection