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Agglutination reaction slide

  • US 5,019,351 A
  • Filed: 10/09/1990
  • Issued: 05/28/1991
  • Est. Priority Date: 04/29/1988
  • Status: Expired due to Term
First Claim
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1. A test element for an agglutination test of a sample-reagent mixture, comprising at least one pair of plate members defining therebetween a reaction capillary having a predetermined thickness for the sample-reagent mixture to flow through the capillary, the reaction capillary having an input end and an output end, the input end of the reaction capillary being fluidically connected to a zone for receiving and mixing the sample with the reagent, wherein:

  • the reaction capillary has a substantially rectangular cross-sectional configuration in a direction perpendicular to the flow of the sample-reagent mixture,the reaction capillary further has an upstream region with a thickness at the input end of between about 50 and about 100 μ

    m and a downstream region with a thickness at the output end of between about 200 and about 300 μ

    m, the thickness of the reaction capillary increasing from the upstream region toward the downstream region, andthe increase in the reaction capillary thickness is substantially continuous and linear over the length of each region.

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