Numerous clinical observations have shown that the vulnerable site of cervical lesions is the migratory zone between the squamous epithelium-columnar epithelium junction. Due to the repeated changes in the migratory zone, the immune system of the cervical transformation zone is weakened in its ability to recognize the response and becomes a weak link, making it vulnerable to foreign pathogens and viruses. Therefore, the cervical os and the migratory zone are the source of cervical lesions and are the key sites for curing cervical lesions. What are the laboratory tests for migratory lesions? Cervical cytology: First, the doctor will ask the patient about her symptoms and menstruation, and perform a gynecological examination to observe the condition of the cervix with the naked eye, including the presence of cervical erosion and redundancy, and then perform a cervical cytology, in which some exfoliated cells are scraped from the cervix and stained and observed under a microscope. The most commonly used method is Pap smear. This cytology examination is reported in five grades: Pap 1 is normal result, Pap 2 is inflammation, Pap 3 is suspicious cancer, Pap 4 is highly suspicious cancer, and Pap 5 is cancer. Colposcopy: If there are abnormal cytology results, the doctor also recommends colposcopy, which magnifies the surface of the cervix several times. After applying 3% acetic acid solution to the surface of the cervix, changes in the color of the cervical epithelium, blood vessels, etc. are observed, whereby a preliminary determination can be made as to whether there is a suspicious lesion on the cervix. This is because where there is a lesion, the epithelium will appear white in varying degrees. Cervical biopsy: Finally, if the colposcopy is doubtful, the doctor will take a small amount of cervical tissue for biopsy of the suspicious lesion under colposcopic positioning, and the biopsy result will be the final conclusion of the cervical lesion. Through these examinations, the doctor can determine if the cervix is diseased or not and what kind of disease it has, and give the corresponding treatment measures.