Private Blood Tests are available in Cambridge through Blue Horizon Medicals at the Cambridge Lea Spire Hospital. 30 New Road, Impington, Cambridge. CB24 9EL. This private and professional clinic blood test location can test patients of ages 16+ 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.