A self-contained sample processing cartridge, is disclosed. The sample processing cartridge includes a first member that includes a receiver to receive a sample specimen slide. The cartridge may also include a second member that closes on the first member to form a chamber inside the cartridge. The sample specimen slide forms a surface of the chamber. Placing the slide in the cartridge effectively completes the chamber of the cartridge. In one embodiment, the receiver of the first member includes an open region adjacent which the specimen slide is received. The second member includes a plurality of fluid inputs and at least one fluid output. The plurality of fluid inputs couples to the chamber by a plurality of channels respectively therebetween. In one embodiment, at least one of the plurality of channels may include a reagent reservoir and at least one of the plurality of channels includes a dissolvable blocking reservoir.