A module and process for forming a ceramic fluidic module (300) that includes a unified closed-porosity ceramic body (200) and a tortuous fluid passage (P) that extends through the body (200). The body (200) has a first mean density within a first layer (222) that is greater than a second mean density within a second layer (226). The first and second layers (222, 226) are axially serially arranged between opposed major surfaces (228, 229) of the body (200). The fluid passage (P) adjoins the first layer (222) of the body (200). The process includes pressing a first volume of ceramic powder (120) to form a pre-pressed body (150). A passage mold (130) is then positioned on the pre-pressed body (150). The pre-pressed body (150) and the passage mold (130) are then covered with a second volume of ceramic powder (125). The body (150), the mold (130), and the second volume of ceramic powder (125) are then pressed to form a pressed body (160). The pressed body (160) is heated and sintered to form the ceramic fluidic module (300).