A process for the preparation of a topography for improved blood coagulation and/or cell attachment on a body made of titanium or a titanium alloy. The process includes the subsequent steps of: a) etching at least a portion of the surface of the body with a first etching solution including a mineral acid, and b) etching the surface etched under a) with a second etching solution different than the first etching solution, the second etching solution including hydrofluoric acid.