Laboratory Tests Overview
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Questions and Answers

What is the main purpose of lab tests in healthcare?

  • To promote use of alternative medicines
  • To confirm a diagnosis and evaluate drug therapy (correct)
  • To reduce the need for clinical assessments
  • To increase healthcare costs
  • How are normal ranges for lab results typically established?

  • By testing a large group of healthy individuals (correct)
  • Based on an arbitrary selection of values
  • Through estimates from historical data
  • By testing individuals with known diseases
  • Which of the following indicates that immediate medical action is required?

  • Results that are consistent with typical patterns
  • Critical values that are dangerously abnormal (correct)
  • Normal lab test results
  • Reference values that match average results
  • What might lower levels of albumin in a lab test indicate?

    <p>Severe dehydration</p> Signup and view all the answers

    Why is it important to interpret lab results based on context?

    <p>Because reference ranges can vary with age and gender</p> Signup and view all the answers

    Which of the following factors could interfere with albumin test results?

    <p>Drugs that alter serum electrophoretic patterns</p> Signup and view all the answers

    What is one of the primary uses of albumin testing?

    <p>To monitor liver and kidney function</p> Signup and view all the answers

    In a clinical setting, what may follow lab tests according to post-test considerations?

    <p>Follow-up assessment may be necessary</p> Signup and view all the answers

    What role does albumin play in the body?

    <p>Helps maintain colloidal osmotic pressure</p> Signup and view all the answers

    Which condition is NOT indicated by low levels of albumin?

    <p>Chronic hypertension</p> Signup and view all the answers

    Study Notes

    Laboratory Tests

    • Laboratory tests assist healthcare providers in evaluating client health and making informed decisions.
    • Tests can be ordered for screening, evaluation of drug effectiveness, diagnosis confirmation, or ruling out clinical issues.
    • Lab results influence clinical decision-making and client care plans.
    • Comprehending laboratory terminology is essential for safe and efficient care.

    Normal Ranges vs. Reference Ranges

    • Normal ranges are determined by analyzing results from a large group of healthy individuals.
    • Ranges can vary depending on factors like age and gender.
    • For example, males have a higher hemoglobin level than females.

    Critical Values

    • Critical values represent dangerously abnormal results requiring immediate action to prevent life-threatening situations.

    Post-Test Considerations

    • Post-test assessments may be necessary depending on the results obtained.

    Chemistry Tests

    • Chemistry tests measure chemical components in bodily fluids and tissues to identify abnormalities.
    • Blood and urine are commonly used specimens.

    Albumin (AL)

    • Normal range: 35–50 g/L
    • Used to diagnose or monitor liver diseases, nutritional deficiencies, chronic edema, and cancer.
    • Albumin is a liver-produced protein component of total serum protein, along with pre-albumin and globulins.
    • It maintains colloidal osmotic pressure.
    • Blood sample: Red tube. Urine sample: 24-hour urine collection.
    • Purpose: Assess liver and kidney function, protein intake adequacy, and determine edema causes in extremities and abdomen.
    • Interfering factors: Medications like aspirin, bicarbonates, corticosteroids, and salicylates can disrupt normal serum electrophoresis patterns.
    • Results and significance:
      • Lower levels: Indicate malnutrition, liver disease, ascites, inflammatory disease, autoimmune disorder, GI malabsorption syndromes, and pregnancy.
      • Higher levels: Indicate severe dehydration.

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    Description

    This quiz covers the essential aspects of laboratory tests in healthcare, detailing their role in client evaluation and decision-making. It includes discussions on normal versus reference ranges, critical values, and post-test considerations. Understanding laboratory terminology is emphasized for effective client care.

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