A reagentless whole-blood analyte detection system that is capable of being deployed
near a patient has a source capable of emitting a beam of radiation that includes
a spectral band. The whole-blood system also has a detector in an optical path
of the beam. The whole-blood system also has a housing that is configured to house
the source and the detector. The whole-blood system also has a sample element that
is situated in the optical path of the beam. The sample element has a sample cell
and a sample cell wall that does not eliminate transmittance of the beam of radiation
in the spectral band.