Urine Albumin Concentration (UAC) Measurement
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Questions and Answers

What is the primary purpose of measuring urine albumin concentration?

  • To diagnose diabetes
  • To evaluate the effects of hypertension
  • To monitor renal damage in diabetic patients (correct)
  • To assess cardiovascular risk

Why is a first morning sample preferred for measuring urine albumin concentration?

  • Because it provides the most accurate results (correct)
  • Because it helps diagnose diabetes better
  • Because it correlates strongly with lipid levels
  • Because it reduces the effect of patient hydration

What risk factor makes urine albumin a marker for renal damage in nondiabetic patients?

  • Obesity
  • Elevated lipids (correct)
  • High blood sugar levels
  • Low blood pressure

In what units is Urine Albumin:Creatinine Ratio (ACR) measured?

<p>mg/g creatinine (D)</p> Signup and view all the answers

What does an ACR ratio higher than 34mg/mmol indicate?

<p>Declining kidney function (D)</p> Signup and view all the answers

Why might daily activity lead to false positive ACR results?

<p>It affects the ratio of albumin to creatinine (C)</p> Signup and view all the answers

What is the normal level of ACR in spot urine specimens?

<p>&lt; 30 mg/mmol creatinine (C)</p> Signup and view all the answers

What is the purpose of expressing albumin concentration in a spot sample as a ratio to urine creatinine?

<p>To account for patient hydration effects on albumin concentration (D)</p> Signup and view all the answers

What is the relationship between urea and BUN?

<p>Urea is a waste product formed in the liver, while BUN measures the amount of nitrogen contained in urea. (B)</p> Signup and view all the answers

Why is the BUN test usually done alongside a blood creatinine test?

<p>To have a more specific indicator of kidney function. (C)</p> Signup and view all the answers

What contributes to an increase in blood urea concentrations?

<p>Increased protein load due to diet or certain medical conditions. (A)</p> Signup and view all the answers

Why is urea considered a poor marker for kidney disease compared to creatinine?

<p>Urea handling in the kidney tubules varies with urine flow rate. (B)</p> Signup and view all the answers

What can cause lower blood urea concentrations to be seen in pregnancy?

<p>Increased urine flow rate. (A)</p> Signup and view all the answers

How does BUN help in indicating kidney dysfunction?

<p>By measuring the amount of nitrogen in urea. (D)</p> Signup and view all the answers

What does an increase in urea cycle enzyme activity result in?

<p>Decrease in blood urea levels. (C)</p> Signup and view all the answers

Why is it important to consider both protein intake and liver function when interpreting BUN results?

<p>Both factors can impact blood urea nitrogen levels. (A)</p> Signup and view all the answers

What makes creatinine a better marker for kidney function than urea?

<p>Creatinine production rates are constant and less affected by external factors compared to urea. (A)</p> Signup and view all the answers

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