Reference no: EM132976849

1. What is meant by the term tubular transport capacity? What is the relationship of the capacity, renal threshold level, and the appearance of a substance in the urine?

2. Differentiate the terms reabsorption and secretion as they relate to what occurs in the nephron.

3. What will be the effect on glucose, nitrite, and bilirubin if a urine sits at room temperature for 4 hours prior to analyzing? What causes these changes?

4. A patient was instructed to collect his urine for 24 hours. He began collected at 10 am on Monday. He brings the specimen to the lab on Wednesday at 11 am and states that he forgot when he was supposed to stop collecting and decided to keep adding to it until he was able to drop off the collection. How will this affect your analysis of the specimen? Why does it matter? What should the next steps be?

5. A specimen was received in the laboratory for urinalysis testing. You begin performing your analysis and obtain a specific gravity of 1.000 which seemed odd, but you continue with your testing. You also perform a creatinine test and the result was less than the limit of detection. Is this physiologically possible result for urine? Why or why not? Explain your answer.

6. Differentiate "glucosuria with hyperglycemia" vs. "glucosuria without hyperglycemia." What is the difference in chemical urinalysis results? List a disorder for each of the conditions and describe the mechanism that results in the laboratory findings.