Immunoassay reagents and methods for determination of LSD and LSD metabolites
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United States of America Patent
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app pub date -
Mar 2, 2001
filing date -
Nov 20, 1995
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Abstract
To detect LSD in biological samples, antibodies are raised to LSD conjugated to a protein carrier, preferably through the indole ring. Selected antibodies are matched with an immunoassay reagent in which the LSD is conjugated in the same position to a labeling or separation means. The set of reagents can be used in immunoassays with remarkably little cross-reactivity with potential interfering substances such a chlorpromazine and ergotamine, and a low false-positive rate in a panel of clinical test samples. Also provided is a set of reagents for measuring glucuronide metabolites of LSD by immunoassay, which permits exposure to LSD to be determined over a longer diagnostic window.
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