Private Blood Tests are available in Leeds through Blue Horizon Medicals at the Leeds Spire Hospital. Jackson Avenue, Leeds, West Yorkshire. LS8 1NT. This private and professional clinic blood test location can test patients of ages 5+ and does have freezing facilities, meaning more profiles are available than standard postal profiles. As phlebotomy is included and the entire process is managed by professionals, this is a VIP blood test, not a DIY blood test.