Whole blood analyses and diffusion apparatus therefor

Details Whole blood analyses and diffusion apparatus therefor Whole blood analyses and diffusion apparatus therefor

1979-01-31

1981-09-08

Turk, Arnold

Chemistry: physical processes

Physical processes

Crystallization

23230B, 422 56, 422 69, G01N 3106, G01N 3352

Patent

active

042882281

ABSTRACT:
Methods and apparatuses are featured for analyzing whole blood samples by diffusion techniques in porous media. A fluid component of the whole blood is diffused into a thin-film porous medium of a given predetermined volume. Hematocrit dependent errors in diffusion time do not pose a problem in obtaining a precise aliquot of the fluid component of the whole blood due to rapid diffusion and saturation of the fluid component into the porous medium.
In another embodiment, diffusion switches or valves allow for precise aliquots in porous media by control of the diffusion and/or reaction of sample analyte with reagents.

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