BOC Urinalysis - Body Fluids Exam Questions and Answers Updated 2024
1. The largest source of error in creatinine clearance tests is: A. secretion of creatinine B. improperly timed urine specimens C. refrigeration of the urine D. time of collecting blood sample - ANSWER-B 2. Given the following information, calculate the creatinine clearance: 24-hour urine volume 1100 ml; serum creatinine 1.5 mg/dL, urine creatinine 175 mg/dL – ANSWER-88.67 mL/min 3. Quantitative urine tests are performed on: A. First morning specimens B. Timed specimens C. Midstream clean catch specimens D. Suprapubic aspirations - ANSWER-B 4. An unpreserved specimen collected at 8 a.m. and remaining at room temperature until the afternoon shift arrives can be expected to have: - Decreased glucose and ketones - Increased bacteria and nitrite - Decreased pH and turbidity - increased cellular elements A. 1,2, and 3 B. 1,2,3 and 4 C. 1 and 2 only - ANSWER-C
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