HPV is diagnosed by a cell sample taken to find the DNA typical of HPV in women. Not all HPV viruses cause symptoms. Genital warts are caused by a type of HPV and can be present in men or women. A doctor will visually examine warts to determine if they are caused by HPV. Sometimes a biopsy of the wart is necessary. Women may be screened for HPV since it can cause cervical cancer, but men are not screened. Follow the links below to find WebMD's comprehensive coverage about how HPV and genital warts are diagnosed, what tests are used, who should be tested, and much more.