Protein assay method and test device
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United States of America Patent
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Issued Date -
Jul 27, 2006
app pub date -
Jan 27, 2005
filing date -
Jan 27, 2005
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Abandoned
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Abstract
A test device for detecting the presence of protein or other reducing compound wherein a bicinchoninic acid or salt composition is in a sampling swab (27) on a sampling wand (17) is separate from a dried cupric salt on a disc (48) in an essentially transparent well (45). The reaction of protein with the cupric salt in the well in the presence of the composition reduces Cu.sup.+2 to Cu.sup.+1 which forms a deep purple complex with the bicinchoninic acid or salt and which can be detected visually or by a spectophotometric device (10) or other detection instruments. The result determines whether or not surface is contaminated with protein or other reducing compound and thus is unsanitary.
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