Patent ID: 8871521

Claim:
A device for medical testing for the presence of ketones in breath of a patient, comprising a hollow container, the hollow container containing: a powder comprising a powder reagent selected from the group consisting of sodium nitroferricyanide, dinitrophenyihydrazine, copper sulfate/potassium sodium tartrate, and combinations of any thereof; and a powder component selected from the group consisting of sodium silicate, calcium sulfate, calcium chloride, montmorillonite clay, molecular sieves, phosphorous pentoxide, silica, cellulose, glass beads, poly(2,6-diphenylphenylene oxide polymer and combinations of any thereof; and a liquid reagent solution comprising a strong base selected from the group consisting of an alkali hydroxide, an alkaline-earth metal hydroxide, and a combination of any thereof, wherein the hollow container is configured such that the breath comes in contact with the powder after the patient blows into the hollow container, and the powder changes color upon exposure to the ketones and the liquid reagent solution.