TCT test, also known as cervical fluid-based cytology, is done alone and must be repeated once a year if the test is negative. This is because a TCT test alone may result in a missed or misdiagnosis. At present, it is TCT and HPV test, these two combined tests, if both are negative, generally, it is possible to review once in 3-5 years, the accuracy rate of these two combined tests is relatively high, can reach more than 95%. The accuracy rate of TCT alone can only reach 60%-70%, so it is very important to have TCT once a year to detect cervical precancer or cervical cancer in time.