Sample Question from Confirmatory and Secondary Urinalysis Screening Tests, presented by MediaLab

Detection of Urinary Sugars and Reducing Substances

Question

A negative sugar result on a reagent stick and a positive Clinitest® result on the same specimen indicates:

Please select the single best answer

	a reducing substance other than glucose is present.
	less than 0.25 gm/dl but at least 0.1 gm/dl of glucose is present.
	the reagent or specimen is contaminated by an oxidizing agent
	a "pass-through" phenomenon has occurred.

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