Types of Errors and Blood Specimens in Collection Processing
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Questions and Answers

What does the term 'basal state' refer to?

  • The state of the body during intense physical activity
  • The state of the body under the influence of sedatives
  • The state of the body after a heavy meal
  • The metabolic state of the body early in the morning after fasting for approximately 12 hours (correct)

How does serum differ from other body fluids in terms of viscosity?

  • It has varying viscosity based on diet and exercise
  • It has similar viscosity to other body fluids
  • It has lower viscosity due to the absence of fibrinogen (correct)
  • It has higher viscosity due to the presence of fibrinogen

What is the primary advantage of using serum for analysis of some abundant components?

  • Enhanced cellular content for better results
  • Reduced specimen delivery
  • Decreased precipitates formed during freezing and thawing (correct)
  • Increased viscosity for precise analysis

Why should specimens for determining the concentration of body constituents be collected when the patient is in a basal state?

<p>To minimize or eliminate effects of diet, exercise, and other factors on test results (A)</p> Signup and view all the answers

What does hemoconcentration refer to?

<p>A decrease in blood fluid content resulting in increased blood constituent concentration (D)</p> Signup and view all the answers

Which factor contributes to hemoconcentration after a tourniquet is released?

<p>Water loss from capillaries due to increased pressure (C)</p> Signup and view all the answers

What is the benefit of using cerebrospinal fluid (CSF) over serum in terms of yield?

<p>15-30% higher yield compared to serum (A)</p> Signup and view all the answers

Why should the laboratorian verify that a sample designated for clinical chemistry analysis is not shared among several departments?

<p>To prevent invalidating certain tests in different areas (A)</p> Signup and view all the answers

For which purpose is creatinine analysis often used in the clinical chemistry lab?

<p>To assess the completeness of a 24-hour urine sample (A)</p> Signup and view all the answers

What makes urine specimens advantageous for creatinine clearance and urine protein determination?

<p>Stability and low interference of creatinine output (C)</p> Signup and view all the answers

Why is time-saving an advantage of using cerebrospinal fluid (CSF) compared to serum?

<p>No clotting process required (A)</p> Signup and view all the answers

What characteristic of urine makes it a challenging specimen to collect for quantitative analyses?

<p>Difficulty in ensuring complete sample collection within specified time (A)</p> Signup and view all the answers

What type of errors are made during the testing process?

<p>Analytical errors (A)</p> Signup and view all the answers

Which blood sample type has a higher glucose concentration compared to venous blood?

<p>Capillary blood samples (B)</p> Signup and view all the answers

What is the specimen of choice for most routine lab tests?

<p>Plasma (D)</p> Signup and view all the answers

Which component of blood contains about 55% of plasma?

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

What does serum lack compared to plasma?

<p>Clotting factors like Factor I (D)</p> Signup and view all the answers

Why is arterial blood collection known for its difficulty and hazards?

<p>It involves inherent arterial pressure (D)</p> Signup and view all the answers

Which blood sample type has the highest oxygen content?

<p>Arterial blood samples (B)</p> Signup and view all the answers

What is the main disadvantage of using arterial blood samples for routine tests?

<p>Potential complications and pain (B)</p> Signup and view all the answers

What distinguishes capillary blood from venous blood in terms of its composition?

<p>Different protein concentrations in capillary blood (B)</p> Signup and view all the answers

Why is plasma the preferred specimen for most routine lab tests?

<p>It provides immediate testing ability without waiting for clotting (A)</p> Signup and view all the answers

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