Most of the clinical laboratory tests are negative for a good result and positive for a bad result. For example, a positive test for Trichomonas indicates a vaginal infection, and a positive test for Candida indicates a Candida infection, which is the result of a disease. In some clinical cases, a positive test is a good thing, such as a positive test for closed antibody, but a negative test is a bad result. Therefore, in clinical practice, it is important to analyze whether a positive test is good or bad, depending on the test.