Kleiner Perkins-backed Nurx provides birth control, emergency contraception, the HIV prevention medication PrEP and an at-home HPV testing kit. : Telemedicine startup Nurx — once dubbed the “Uber for birth control” — has launched a direct-to-consumer Human papillomavirus (HPV) testing kit. The addition means its customers can in the comfort of their own homes test for the most common sexually transmitted infection in the U.S. and a cause of genital warts and cervical cancer. The Y Combinator graduate is backed with about $42 million in venture capital funding from Kleiner Perkins, Union Square Ventures, Lowercase Capital and others.