Calculating Specificity in Diagnostic Testing
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Questions and Answers

Which blood constituents are mentioned to show diurnal variation in the passage?

  • Prolactin and TSH
  • Vitamin D and ACTH
  • Fe and GH (correct)
  • Protein-bound constituents
  • Which factor can affect the level of serum triacylglycerols according to the passage?

  • Posture
  • Diet composition (correct)
  • Diurnal rhythm
  • Seasonal fluctuation
  • What is one impact of posture on blood samples according to the passage?

  • Decrease in alkaline phosphatase levels
  • Increase in vitamin D concentration
  • Significant differences in protein concentration (correct)
  • No effect on protein-bound constituents
  • Which physiological state is specifically mentioned regarding natural fluctuations in pituitary and ovarian hormones in the passage?

    <p>Menstrual cycle</p> Signup and view all the answers

    In which situation would variations in blood sample collection due to venostasis occur?

    <p>When drawing blood from a patient in recumbent position</p> Signup and view all the answers

    What is the purpose of point of care testing (POCT)?

    <p>To perform tests in remote locations like intensive care units</p> Signup and view all the answers

    In the laboratory testing cycle, what does the preanalytical phase involve?

    <p>Specimen collection and transportation to the laboratory</p> Signup and view all the answers

    What percentage of factors negatively affect the quality and accuracy of laboratory results according to the text?

    <p>45-60%</p> Signup and view all the answers

    What is a key advantage of point of care testing (POCT) compared to traditional testing methods?

    <p>Eliminates the need for sample transportation to the laboratory</p> Signup and view all the answers

    Which phase of the laboratory testing cycle begins when a healthcare professional decides to order a lab test?

    <p>Preanalytical phase</p> Signup and view all the answers

    What does the preanalytical phase of the laboratory testing cycle NOT include?

    <p>Final test result interpretation</p> Signup and view all the answers

    What type of anemia is caused by folic acid deficiency?

    <p>Macrocytic anemia</p> Signup and view all the answers

    Which test is used to diagnose vitamin B12 deficiency?

    <p>Schilling test</p> Signup and view all the answers

    What type of anemia results from iron deficiency?

    <p>Microcytic anemia</p> Signup and view all the answers

    Which component of the Complete Blood Count (CBC) is most useful in determining different types of anemia?

    <p>MCV</p> Signup and view all the answers

    In which physiological state is folic acid supplementation crucial to prevent a specific condition?

    <p>Pregnancy</p> Signup and view all the answers

    Which test is used to diagnose iron deficiency?

    <p>Serum iron levels</p> Signup and view all the answers

    What type of immunity is mediated by T lymphocytes?

    <p><strong>Cell-mediated immunity</strong></p> Signup and view all the answers

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