Element for analyzing body fluids

Details Element for analyzing body fluids Element for analyzing body fluids

1989-01-23

1991-06-11

Lacey, David L.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Calorimeter

422 57, 422 58, 435 71, 435805, 435 792, 436169, 436170, 436518, G01N 3122

Patent

active

050230522

ABSTRACT:
A multi-layer analytical element for analyzing body fluids includes a light transmitting and water impermeable support having provided thereon a fist non-fibrous porous layer, a second non-fibrous porous layer, and a fibrous porous layer in this order, the three porous layers being bonded together in one piece with an adhesive locally applied in such a manner that small through-holes are formed so as not to substantially interfere with uniform penetration of the liquid. At least one of the non-fibrous porous layers contains a reagent composition which undergoes a detectable optical change in the presence of a component to be analyzed, which optical change is detectable in the first non-fibrous porous layer, and wherein the non-fibrous porous layer comprises polysulfone. The analytical element enables dry analyses with improved precision independently of the hematocrit value of samples.

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patent: 4166093 (1979-08-01), Smith-Lewis et al.
patent: 4292272 (1981-09-01), Kitajima et al.
patent: 4472498 (1984-09-01), Masuda et al.
patent: 4576793 (1986-03-01), Koyama et al.
patent: 4786595 (1988-11-01), Arai et al.
patent: 4870005 (1989-09-01), Akiyoshi et al.

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