Quantification of fibrinogen in whole blood samples contained in a tube using a float to separate materials
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United States of America Patent
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Aug 11, 1992
Grant Date -
N/A
app pub date -
Jan 2, 1991
filing date -
Jan 2, 1991
priority date (Note) -
Expired
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Abstract
Quantification of blood plasma fibrinogen content is made in a sample of anticoagulated whole blood contained in a sampling tube. The tube is a transparent centrifuge tube which contains a sample constituent layer-elongating float. The blood sample is centrifuged in the tube containing the float, and various cell constituent measurements are made. The centrifuged sample is then heated and recentrifuged to cause the precipitated fibrinogen to layer out on top of the float remote from the buffy coat band in the plasma layer. The thickness of the fibrinogen band is then measured, whereby quantification of the fibrinogen content of the blood sample can be made by a precalibrated instrument.
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