Analytical assay
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United States of America Patent
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Jul 12, 1994
Issued Date -
N/A
app pub date -
Oct 16, 1992
filing date -
Jun 4, 1990
priority date (Note) -
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Abstract
A method for determining the amount of an analyte in a sample fluid utilizing an assay element which comprises at least one reagent layer. The assay method includes the steps of optically reading a signal producing species, e.g., a fluorescent label, a first time prior to depositing the sample fluid on the assay element and a second time, at the same wavelength and in the same location within the assay element after the sample fluid has been applied to the assay element and the sample analyte has interacted with the reagent(s) present in the assay element. The first, or dry, reading is corrected for relative humidity and/or temperature variations.
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