Analyte detection systems and methods using multiple measurements

Abstract

In certain embodiments, a sampling assembly is for use with a main analyzer. The main analyzer is configured to sense an analyte in a body fluid obtained from a patient through a first fluid passageway extending from the main analyzer. The sampling assembly includes an instrument portion separate from the main analyzer and including at least one sensor. The instrument portion is removably engaged with the first fluid passageway. The at least one sensor is in sensing engagement with the first fluid passageway such that the at least one sensor can sense a property of a fluid within the first fluid passageway.

What is claimed is: 
     
         1 . An apparatus for analyzing bodily fluid, the apparatus comprising:
 a fluid handling network comprising:
 a patient connector configured to maintain fluid communication with the bodily fluid in a patient; and 
 at least one passageway configured to connect between the patient connector and a sample analysis chamber; 
   at least one pump in operative engagement with the fluid handling network, the at least one pump having a sample draw mode in which the at least one pump is operable to draw a sample of the bodily fluid from the patient through the at least one passageway, wherein the at least one pump is configured to direct an analysis portion of the sample to the sample analysis chamber;   an analyzer configured to obtain at least one mid-infrared spectroscopic characterization of the analysis portion of the sample while the sample is located inside the sample analysis chamber;   a waste chamber configured to receive the analysis portion from the sample analysis chamber after the analysis portion is analyzed by the analyzer; and   a fluid sensor located between the patient connector and the sample analysis chamber and spaced from the sample analysis chamber, the fluid sensor configured to sense a property of the bodily fluid within the at least one passageway while the bodily fluid is located outside of the sample analysis chamber.