| abstract |
Disclosed are systems (e.g., 100, 102, 400, 800, 900, 26130) apparatus (e.g., 102, 800, 900) and methods for determining information related to analyte(s) (e.g., concentration) in a sample such as biological fluid. An analysis system (e.g., 100, 102, 400, 800, 900, 26130) for determining infoπnation relating to at least one analyte in a sample of biological fluid can be configured to: withdraw the sample of biological fluid from the source of biological fluid; interrupt the flow of infusion fluid while the sample of biological fluid is withdrawn; analyze the withdrawn biological fluid to determine information relating to at least one analyte; and resume the flow of infusion fluid after the sample of biological fluid is withdrawn. A method of interrupting flow of an infusion fluid without triggering an alarm can comprise, while the flow of the infusion fluid is interrupted, diverting the flow of the infusion fluid from a fluid passageway (e.g., 514, 3610, 3710, 3810, 3910, T21) to an expandable volume (e.g., 568, 599, 810, 910, 3818, 3930, 3918) at a rate that maintains constant flow from an infusion pump (e.g., 518). |