Sample pad assay initiation device

Details Sample pad assay initiation device Sample pad assay initiation device

1991-07-02

1993-11-09

Warden, Robert J.

Chemistry: analytical and immunological testing

Optical result

With reagent in absorbent or bibulous substrate

436170, 436177, 422 56, 422 57, 422 58, 422 61, 435 11, 435810, G01N 2177

Patent

active

052602214

ABSTRACT:
A self-contained assay device is provided, where an analyte may be detected or be quantitated by measuring the distance of a detectable signal from a predetermined site. The device employs two strips separated by a gap, where a flow path is completed by movement of a sample receiving pad into the gap. The movement of the sample receiving pad also results in release of a reagent solution which is then transported through the pad into the quantitation area where the amount of analyte may be determined. Various chemistries may be employed for providing a detectable signal.

REFERENCES:
patent: 4288288 (1981-09-01), Oberhardt
patent: 4637978 (1987-01-01), Dappen
patent: 4959324 (1990-09-01), Ramel et al.

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