Sample pad assay initiation device and method of making

Details Sample pad assay initiation device and method of making Sample pad assay initiation device and method of making

1989-05-18

1990-09-25

Warden, Robert J.

Chemistry: analytical and immunological testing

Optical result

With reagent in absorbent or bibulous substrate

436170, 422 56, 422 57, 422 58, 422 61, 435 11, 435 14, 435810, G01N 2179, G01N 3122, C12Q 154, C12Q 160

Patent

active

049593242

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. r

REFERENCES:
patent: 4477575 (1984-10-01), Vogel et al.
patent: 4647541 (1987-03-01), Guadagno et al.
patent: 4774192 (1988-09-01), Terminiello et al.
patent: 4780280 (1988-10-01), Berger et al.

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