Clinical Chemistry Quiz for SLLE Exam 202
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Questions and Answers

Which tube is used for measuring blood glucose?

  • Sodium fluoride tube (correct)
  • Plain tube
  • Heparin tube
  • EDTA tube

    • What can cause falsely elevated results for glucose, potassium, and protein-based analytes?

  • Hemolysis of the sample
  • Exposure to light
  • Prolonged tourniquet (correct)
  • Drawing blood from an arm with an IV

    • Which analyte is increased in a hemolyzed sample?

  • Creatinine
  • Albumin
  • LDH (correct)
  • Insulin

    • What should be done when drawing blood from an arm with an IV to avoid sample dilution?

    <p>Separate the sample immediately (C)</p> Signup and view all the answers

    What should be done to maintain accurate ammonia concentrations in a blood sample?

    <p>Immediately place the sample on ice after labeling (A)</p> Signup and view all the answers

    Which tube is used for HbA1C measurement?

    <p>EDTA tube (C)</p> Signup and view all the answers

    What should be done to avoid falsely decreased bilirubin levels?

    <p>Avoid exposure to light (D)</p> Signup and view all the answers

    What is the effect of prolonged tourniquet (hemoconcentration) on glucose results?

    <p>Falsely elevated glucose results (C)</p> Signup and view all the answers

    Which analyte is decreased in a hemolyzed sample?

    <p>Insulin (B)</p> Signup and view all the answers

    What should be done to maintain accurate ammonia concentrations in a blood sample?

    <p>Collect ammonia into EDTA or heparin tubes, separate immediately, and keep plasma on ice until analysis (B)</p> Signup and view all the answers

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