Enumeration of white blood cells
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United States of America Patent
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Apr 21, 2009
Grant Date -
Sep 21, 2006
app pub date -
Apr 11, 2005
filing date -
Mar 11, 2005
priority date (Note) -
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Abstract
A sample acquiring device for volumetric enumeration of white blood cells in a blood sample that includes a measurement cavity for receiving a blood sample. The measurement cavity has a predetermined fixed thickness. The sample acquiring device also has a reagent, which is arranged in a dried form on a surface defining the measurement cavity. The reagent has a hemolysing agent for lysing red blood cells in the sample and a staining agent for selectively staining white blood cells in the sample. Also, a system with the sample acquiring device and a measurement apparatus. The measurement apparatus has a sample acquiring device holder, a light source, and an imaging system for acquiring a digital image of a magnification of the sample The measurement apparatus also has an image analyzer arranged to analyze the acquired digital image for determining the number of white blood cells in the blood sample.
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