초록 ▼

A chromatic test device for the performance of immuno- or chemical assays wherein a unitary planar fibrous filter body incorporates a sample application zone, a separation zone and a reaction zone and the application zone is in fluid communication with a first absorbent and the reaction zone is in f

A chromatic test device for the performance of immuno- or chemical assays wherein a unitary planar fibrous filter body incorporates a sample application zone, a separation zone and a reaction zone and the application zone is in fluid communication with a first absorbent and the reaction zone is in fluid communication with a second absorbent to establish bilateral flow of the fluid component of the sample and of the analyte applied to the zones during the performance of an assay.

대표청구항 ▼

In a test device for performing solid phase immunoassays of a test sample having a liquid component, the combination of: a planar fiber filter matrix which absorbs and conducts fluid, said matrix including a test sample application zone, a separation zone and a reaction zone, said separation zone se

In a test device for performing solid phase immunoassays of a test sample having a liquid component, the combination of: a planar fiber filter matrix which absorbs and conducts fluid, said matrix including a test sample application zone, a separation zone and a reaction zone, said separation zone separating said application zone from said reaction zone and being sufficiently long to inhibit migration of particulates in said sample into said reaction zone; first absorbent material in communication with said sample application zone; and second absorbent material in communication with said reaction zone so as to cause bilateral flow of the liquid component of said test sample; said filter matrix at the location of communication between said sample application zone and said first absorbent material being constricted for causing said bilateral flow to be primarily from said application zone to said reaction zone, and secondarily from said application zone to said first absorbent material.