Noninvasive measurement of hematocrit and hemoglobin content by differential optical analysis
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United States of America Patent
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Jan 11, 1994
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app pub date -
Dec 12, 1991
filing date -
Dec 12, 1991
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Abstract
The present invention relates to the noninvasive measurement of blood hematocrit and hemoglobin content using differential optical absorption of two or more wavelengths of light during blood volume changes. The method is also useful for noninvasive measurements of other blood analytes, such as glucose, where variations in hematocrit or blood hemoglobin concentration cause errors in the measurement.
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