Question
In a fasting urine sample, which of the following is considered an abnormal finding in the urine?
Ask by Harris Reeves. in the United States
Mar 09,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
An abnormal finding in a fasting urine sample is the presence of glucose in the urine.
Solution
1. In normal physiology, the kidney reabsorbs nearly all of the \( \text{glucose} \) filtered by the glomeruli.
2. When a urine sample is obtained during fasting, the blood glucose level is maintained in a normal range, so there is no exceeding of the renal tubular maximum for glucose reabsorption.
3. Therefore, under normal conditions a fasting urine sample should not contain detectable \( \text{glucose} \).
4. The presence of \( \text{glucose} \) in urine (glycosuria) is abnormal and may indicate metabolic disturbances such as uncontrolled diabetes mellitus or a defect in tubular reabsorption.
Thus, an abnormal finding in a fasting urine sample is the presence of \( \textbf{glucose} \) in the urine.
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Simplify this solution The Deep Dive
An abnormal finding in a fasting urine sample could include the presence of glucose. Normally, urine should not contain significant amounts of glucose, as it is typically reabsorbed by the kidneys. If glucose is detected, it may indicate conditions such as diabetes mellitus or impaired kidney function, which warrant further investigation. Another abnormal finding could be the presence of protein in urine, known as proteinuria. While some protein can be naturally present, high levels often signal kidney damage or disease. Conditions like hypertension or diabetes can contribute to protein leakage in urine, making it essential for further assessment by a healthcare provider.
