The blood service asked Health Canada to allow it to scrap questions about gender or sexuality, and instead base screening on higher-risk sexual behavior such as anal sex. Starting no later than Sept. 30, potential donors will be asked if they have had new or multiple sexual partners in the last previous months, no matter their gender or sexual orientation. Those who say yes will be asked if they have engaged in higher-sisk sex. If they have, they will need to wait three months after such activity before donating blood.