Immunohistochemistry does not necessarily indicate cancer, but usually needs to be combined with other test results to determine whether it is cancer. Immunohistochemistry can be used to diagnose malignant tumors, determine the primary site of metastatic malignant tumors, clarify the pathological typing of tumors, etc., and also formulate appropriate treatment plans through the results of this test. Therefore, some people who undergo immunohistochemistry do not necessarily have cancer, and there is no need for the examinee to be overly nervous, adjust their mindset and actively cooperate with the medical staff. Clinical diagnosis of cancer is based on a combination of causes, symptoms and tests, and cannot be based on one test alone. Therefore, those who have immunohistochemistry results should undergo further detailed examination and be evaluated by a doctor to determine whether it is cancer or not. For those who are diagnosed with cancer, they should actively cooperate with doctors for treatment to prevent serious health effects. It is recommended to consult a regular hospital to ensure the accuracy of the test results.