System and method for aggulutination detection

Details System and method for aggulutination detection System and method for aggulutination detection

1993-05-26

1996-02-13

Scheiner, Toni R.

Chemistry: analytical and immunological testing

Involving an insoluble carrier for immobilizing immunochemicals

436533, 436165, 436807, 436816, 436901, 436517, 435 71, 422 58, 422 63, 422 73, G01N 33546, G01N 33557, G01N 3394

Patent

active

054910951

ABSTRACT:
A system and method of determining absence or presence of an illicit substance in a flowing mixture of requisite reagents by agglutination or lack thereof. A plurality of photodetectors are positioned over an illuminated read area oblique to a path of the flowing mixture. Signal samples of each of the detectors are processed individually. Successive samples are processed over a period time to detect differences or edges between relatively clear liquid and relatively opaque clusters in the flowing mixture. The illicit substance is determined in accordance with the number of variations in signal samples for a predetermined number of detectors.

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patent: 4398894 (1983-08-01), Yamamoto
patent: 4597944 (1986-07-01), Cottingham
patent: 4673657 (1987-06-01), Christian
patent: 4806015 (1989-02-01), Cottingham
patent: 4963498 (1990-10-01), Hillman
patent: 5039617 (1991-08-01), McDonald et al.
patent: 5178836 (1993-01-01), Kitamori et al.

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