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Why should urine samples be examined within 1 hour of voiding?



A. RBCs, leukocytes and casts agglutinate on standing for several hours at room temperature
B. Urobilinogen increases and bilirubin decreases after prolonged exposure to light
C. Bacterial contamination will cause alkalinization of the urine
D. Ketones will increase due to bacterial and cellular metabolism

This question is part of Urinalysis & Body Fluids
Asked by Melissa, Last updated: Sep 10, 2020

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melissa3393

melissa

melissa3393
Melissa

Answered Apr 13, 2018

Bacterial contamination will cause alkalinization of the urine

Evaluate each statement. (a) is incorrect because these cells dont agglutinate. (b) is partially correct, but urobilinogen decreases in light. (c) is true, bacterial overgrowth does lead to an alkaline urine. (d) is false, ketones are produced by fat metabolism in the patient
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