HPV type 16 positive retesting needs to be done after sampling the cervical opening, so it is not recommended to do it during menstruation. In the case of HPV 16 infection, if further clarification is needed, a liquid-based thin layer cytology test, or TCT, is performed, which involves collecting cervical cells from the cervix using a specific brush and passing them through a machine for screening. It is therefore not recommended that patients undergo this test during menstruation, as the body is shedding its endometrial lining during menstruation, which can contaminate the sample collected and cause damage to the body. A proper HPV and TCT test should be performed after menstruation and sexual intercourse should be avoided for three days prior to the test. It is recommended that patients undergoing cervical screening should avoid menstruation and abstain from sex for more than three days before the test to avoid compromising the results. It is recommended that the screening be conducted in a regular hospital, specifically under the guidance of the doctor.