Patent ID: 6628388
Filing Date: 2003-09-30
Classification: G01N

Abstract:
A microcrystal detection apparatus comprising:a transparent flow channel capable of receiving and flowing a fluid test sample therethrough at substantially the same temperature as when extracted from a patient; a first polarizing means for polarizing light into a first plane of polarization; a second polarizing means for polarizing light into a second plane of polarization; said second plane of polarization being rotated relative to said first plane of polarization; and a detection means for detecting a component of an associated interrogating light beam passing through said first polarizing means, said flow channel and said second polarizing means, wherein a birefringent crystalline material in the test sample flowing through said flow channel causes said light beam to include said light beam component, thereby allowing said light beam component to impinge said detection means and signal the presence of said birefringent crystalline material in concentrations representative of in vivo conditions.