If you suspect that you have cervical cancer, you can go for a test. What are the tests required for cervical cancer screening? Let’s take a look! 1.Cervical scraping cytological examination is the main method of cervical cancer screening and should be taken in the transformation zone of the cervix. 2.Cervical iodine test Normal cervical vaginal squamous epithelium is rich in glycogen, which is brown or dark brown after staining with iodine solution, while the non-stained area indicates that the epithelium lacks glycogen and may have lesions. Biopsy in the iodine non-staining area can improve the diagnosis rate. Colposcopy Cervical biopsy should be performed under colposcopic observation if the cytological examination of cervical scraping is Pap grade III or above and the TBS classification is squamous intraepithelial neoplasia. 4.Cervical and cervical canal biopsy is a reliable basis to confirm the diagnosis of cervical cancer and cervical precancerous lesions. The tissue taken should include interstitial and adjacent normal tissues. If the cervical smear is positive but the cervix is smooth or the cervical biopsy is negative, a small scraper should be used to scratch the cervical canal and the scrapings should be sent for pathological examination. 5.Cervical conization is suitable for those with multiple positive cervical scrapings and negative cervical biopsies; or those with cervical intraepithelial neoplasia on cervical biopsy and need to exclude infiltrating cancer. Cold knife excision, circumferential electrosurgery or condensing electrosurgery can be used. Cervical cancer is diagnosed by cervical smear as a screening tool. Abnormal cervical smear is followed by other tests or follow-up. Cervical biopsy is usually performed by cervical microscopy, either visually or with acetic acid to identify the lesion, and then biopsy is performed, often with endocervical scraping. There are some classification systems for precancerous lesions of the uterine cervix Heteroplasia: mild, moderate, severe. Cervical intraepithelial neoplasia: 1, 2, 3 (cervical intraepithelial neoplasia, CIN, CIN1, CIN2, CIN3) Squamous intraepithelial lesion: high grade, low grade (squamous intraepithelial lesion, SIL; high grade, HSIL; low grade, LSIL) Low grade, LSIL) Usually low grade squamous intraepithelial lesions are predominantly traced. High grade squamous intraepithelial lesions usually require surgical excision due to their high association with cervical cancer; LEEP or conical excision are commonly used, but the decision has to be made based on the patient’s clinical status. Differential diagnosis of cervical cancer The diagnosis is based on cervical biopsy. Attention should be paid to differentiate it from various cervical lesions with similar clinical symptoms or signs. These include: 1. benign cervical lesions ectopic cervical columnar epithelium, cervical polyps, cervical endometriosis and cervical tuberculous ulcer; 2. benign cervical tumors submucosal leiomyoma, cervical canal leiomyoma and cervical papilloma; 3. malignant cervical tumors primary malignant melanoma, sarcoma and lymphoma, metastatic carcinoma, etc.