A method of biochemical processing may, in certain embodiments, involve the steps of use of a consumable biochemical process element and a consumable biochemical process alterable information memory element associated therewith, such as a substance withdrawal consumable biochemical process alterable information memory element, that may be queried and at least some of whose information may be changed as a result of actions conducted during processing of a biochemical test sequence. Accordingly, advantages relative to knowing how much of a consumable biochemical process element has been used, and how much may be available during a biochemical test sequence, may be achieved.