Composition, test device and method for determining the...

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G01N 21/29 (2006.01) G01N 33/72 (2006.01)

Patent

CA 1127517

ABSTRACT OF THE DISCLOSURE A novel test composition, device and method for deter- mining the presence of urobilinogen in a test sample are disclosed. The composition is capable of producing a detect- able response, such as a change in color or change in light absorption, thus indicating the presence of urobilinogen, both on a qualitative and a semi-quantitative basis. Briefly, the composition comprises para-di(lower alkyl)aminobenzalde- hyde as an indicator compound, a buffer substance capable of producing a pH of about 0.5 to 3, and a compound having the structure Image in whieh X is O or S, and in which R and R', same or different, are lower alkyl, or R and R' together are lower alkylene or Image , wherein n is an integer of 1 to about 6. The device comprises a earrier matrix incorporated with the composition. The method of use comprises con- taeting a test sample with the composition or device and observing any detectable response formed therein.

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