Blood Urea Test: Nursing Department First Stage

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Questions and Answers

What does the BUN test measure?

  • Amount of urea nitrogen in blood (correct)
  • Platelet count
  • White blood cell count
  • Red blood cell count

What are some causes of high blood urea levels?

  • Regular exercise
  • Increased fluid intake
  • Dehydration, heart failure, and urinary tract infection (correct)
  • Low protein intake

Which of the following is a symptom of high urea content?

  • Increased energy levels
  • Decreased heart rate
  • Loss of appetite (correct)
  • Hair loss

How can blood urea levels be reduced?

<p>Avoiding products with creatinine and consuming alkalizing foods like carrots (A)</p> Signup and view all the answers

What is the normal range of urea nitrogen in blood or serum?

<p>$5$ to $20$ mg/dl (A)</p> Signup and view all the answers

Which factor can contribute to high blood urea levels?

<p>Diet high in protein intake (C)</p> Signup and view all the answers

What is the purpose of adding distilled water in the test tube marked as Blank (B)?

<p>To serve as a reference for background absorbance (A)</p> Signup and view all the answers

Why is it important to mix and incubate the contents of the test tubes for 5 minutes at 20-25 degrees Celsius?

<p>To ensure proper dissolution of the reagents (C)</p> Signup and view all the answers

What role does Working Reagent (R1+R2) play in this procedure?

<p>Aids in the biochemical reaction for BUN concentration estimation (C)</p> Signup and view all the answers

Why is it necessary to measure light absorbance at 546nm using a calorimeter?

<p>To quantify BUN concentration in the serum sample (B)</p> Signup and view all the answers

What is the formula provided for calculating BUN concentration in grams per deciliter (g/dl)?

<p>(Unknown Absorbance - Standard Absorbance) x 80 (D)</p> Signup and view all the answers

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