A device and a method are disclosed for positioning a body part (16) on an analytical device (14) for body fluids includes a flexible compression element (24) for pressing against the body part (16) while increasing the pressure and a rigid support part (26) to hold the compression element (24) on a housing (12) of the analytical device (14). The compression element (24) has an engaging member (34) for the body part (16) which can be pressed into the housing (12) such that a withdrawal region (56) of the body part (16) is exposed in the interior (18) of the housing (12) in order to remove liquid.